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# 48÷2(9+3) = ? watch

• View Poll Results: 48/2(9+3)
2
117
52.47%
288
106
47.53%

1. Distributive Law doesn't apply to division, which is just more evidence that it's ambiguous!
2. (Original post by connor ellis)
Bidmas is misleading. division and multiplication are on the same level of priority.
as they have equal priority to decide which to perform first you must work from left to right. This is the standard law.
Everybody stop talking about BIDMAS, BODMAS or any other variations of this. This question is way past that level. As I have been trying to say, you have to consider the DISTRIBUTIVE LAW!!! to get the correct answer of 2. BIDMAS is simply irrelevant.
3. I can't believe anyone thinks the answer to this is not 2.

48/2(9+3) is equivalent to

BODMAS/BIDMAS is misleading because in fact all multiplications/divisions and additions/subtractions be done at the same time essentially so 9/2/5 is not (9/2)/5 which is in fact equivalent to 9/10. BODMAS/BIDMAS is one of the worst things they teach in schools
4. (Original post by orionmoo)
Distributive Law doesn't apply to division, which is just more evidence that it's ambiguous!
NOOOOOOO! The distributive law doesn't apply to division. This is more evidence that the answer is 2 not that the answer is ambiguous:

The fact that the distributive law does not apply to division means you cannot divide both sides by 2. Yet more evidence therefore, that you have to leave the (2(9+3)) as an UNBROKEN ENTITY. The distributive law of multiplication clearly explains that you simply CANNOT SPLIT (2(9+3))

5. (Original post by connor ellis)
Bidmas is misleading. division and multiplication are on the same level of priority.
as they have equal priority to decide which to perform first you must work from left to right. This is the standard law.
Got me thinking. I think it is more reasonable to assume that the whole division is being multiplied by (9+3). Otherwise, we have to assume that the 2 is with the (9+3) as part of the denominator, which isn't really reasonable considering the way it is presented. So yes, 288 is correct, but you have to think a little (which I failed to do in the first instance).

EDIT: can't really be sure. cba doing any more thinking
6. (Original post by MostCompetitive)
So yes, 288 is correct, but you have to think a little
288 is wrong
7. 48/2(12) = 48/24 = 2
8. (Original post by timiop2008)
288 is wrong
cba thinking about it more - mind's totally exhausted from today.
9. (Original post by timiop2008)
288 is wrong
Yeah, in a world where wrong means right.

Spoiler:
Show
See what I did there?
10. (Original post by amime)
Yeah, in a world where wrong means right.

Spoiler:
Show
See what I did there?
Do you think is is 288 as well?

Its not. All I can really do is reiterate my original post which proves it is 2:

THE ANSWER IS 2. I WILL TRY AND EXPLAIN WHY HERE:

The key to answering this answer correctly is knowing the "distributive law", sometimes called the "distributive property". Most calculators including google's are not advanced enough to consider the distributive law - this is why your calculator may be giving you the incorrect alternative of 288.

In the problem: 48÷2(9+3), you have to think of the 2(9+3) as ONE SINGLE ENTITY i.e. you cannot break this up. This is due to what mathematicians call the "distributive law" or "distributive property" - google it for more info.

Applying the distributive law, the problem 48÷2(9+3) becomes:
48÷(2(9+3))
From here, the problem becomes as straightforward as most people probably thought it was initially:
48÷(2(12))
=48÷(24)
=48÷24
=2

The people who are answering the incorrect answer of 288 are doing this:
48÷2(9+3)
=24(9+3)
=24x12
=288 = WRONG
This is incorrect because this solution does not obey the distributive law. It splits up the unbreakable entity '2(9+3)'. into 2 and (9+3). You cannot do this.
11. I can't believe there are 25 pages in this thread. The answer is clear - it's 2 and nothing else.
12. (Original post by timiop2008)
...
Hmm I guess I'd agree with you.

Spoiler:
Show
If you said the answer was 288
I can't believe there are 25 pages in this thread. The answer is clear - it's 2 and nothing else.
Yes, the answer is 2. But it is not clear. IMO Its masters or Ph.D level maths
14. The last time i checked this thread it had 45 responses but...... 492!!!!!!! & it's still increasing!!!

ffs, I can't believe this is still a debate!!!
15. (Original post by timiop2008)
Do you think is is 288 as well?

Its not. All I can really do is reiterate my original post which proves it is 2:

THE ANSWER IS 2. I WILL TRY AND EXPLAIN WHY HERE:

The key to answering this answer correctly is knowing the "distributive law", sometimes called the "distributive property". Most calculators including google's are not advanced enough to consider the distributive law - this is why your calculator may be giving you the incorrect alternative of 288.

In the problem: 48÷2(9+3), you have to think of the 2(9+3) as ONE SINGLE ENTITY i.e. you cannot break this up. This is due to what mathematicians call the "distributive law" or "distributive property" - google it for more info.

Applying the distributive law, the problem 48÷2(9+3) becomes:
48÷(2(9+3))
From here, the problem becomes as straightforward as most people probably thought it was initially:
48÷(2(12))
=48÷(24)
=48÷24
=2

The people who are answering the incorrect answer of 288 are doing this:
48÷2(9+3)
=24(9+3)
=24x12
=288 = WRONG
This is incorrect because this solution does not obey the distributive law. It splits up the unbreakable entity '2(9+3)'. into 2 and (9+3). You cannot do this.
Thanks Einstein, but what you're missing is that just as you state 2 is the number before the bracket, one could also state (48/2) is the number (fraction) before the bracket so no it's not actually that straight forward.
16. (Original post by Prince of Zamunda)
Thanks Einstein, but what you're missing is that just as you state 2 is the number before the bracket, one could also state (48/2) is the number (fraction) before the bracket so no it's not actually that straight forward.
Hello Prince of Zamunda

My name is not Einstein and I never said that the problem was straight forward. In fact, in my last post I said I believed that the problem was masters or Ph.D level mathematics.

What you are missing is that you cannot state the number before the bracket as a fraction. This would split up the 2 and the (9+3) which is not allowed as clearly defined by the distributive law.

Therefore its 2
17. If you were doing algebra, x(y+z) would be x * (y+z), so surely 48/2(9+3) is TWO?
18. (Original post by Jtking3000)
this thread is on 4chan as well

EDIT: and indeed everywhere if you google search it
Someone created this exact thread on NeoGaf too, today. And it has become a popular topic over there as well with over 1,000 replies.
19. (Original post by Simplicity)

I say it's 2.
mhm lets over complicate things lol

48÷2(9+3) = a ÷ b(c+d) = (a) ÷ (bc+bd) = (a) ÷ (b(c+d))

a = 48
b=2
c=9
d=3

our formula LOL (a) ÷ (b(c+d))

substitute in (48) ÷ (2(9+3)) = (48) ÷ (2(12)) = (48) ÷ (24) = 2

or you may do it like this (48) ÷ (2(9+3)) = (48) ÷ (18+6) = (48) ÷ (24) = 2

or like this... 48÷2(9+3) = 2

the key is not the distributive law thing its common sense either youve got that or you dont, if it was like 2+2 ÷ (9+3) then youd get 4 ÷ 12 cose nothings connected to the bracket, you always do the connected to the bracket bits first if this is like a troll thingy its a really good one lol.

oh and you do know when it says 48 ÷ 2(9+3) it means 48 over 2(9+3)

48
--------- =
2(9+3)

48
---------- =
2(12)

48
--------- = 2
24
20. 288, that's my input :L

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