# Simultaneous equations word prob

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#1
https://ibb.co/X7dnzMy where the hell do i start here? I know if it's adding numbers and letters but no idea where to start?
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5 months ago
#2
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5 months ago
#3
(Original post by Strach2k)
https://ibb.co/X7dnzMy where the hell do i start here? I know if it's adding numbers and letters but no idea where to start?
Ok, so the first thing you have to to do is assign a letter to each object, so the spoon can be "s" and the knives can be "k". Then you have to turn the word problem into a simultaneous equation (I presume that you know how to solve a simultaneous equation). So, since a simultaneous equation has two equations we need to group the information in the word problem into two separate equations. the first equation would be k=3s, since a knife is three times the cost of a spoon. The second equation is 9s+3k=£82.80. Now that you have the two equations you should be able to solve the rest.

Hope this helps!

BTW, what year are you in?
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#4
I'm back at college well not atm after 16 years out doing a foundation gcse
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#5
I don't have a clue how to solve the rest as of yet ive had 2 equals answers on both equations got the ys the same by multiplying then solved??
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#6
K=3s
9s+12k =82.80
12 x 3 =36
9s +36k=82.80
9s =46.80

help where have i gone wrong with this please?
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5 months ago
#7
(Original post by Strach2k)
I'm back at college well not atm after 16 years out doing a foundation gcse
Ok, I'm in year 10.
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5 months ago
#8
(Original post by Strach2k)
K=3s
9s+12k =82.80
12 x 3 =36
9s +36k=82.80
9s =46.80

help where have i gone wrong with this please?
Ok, so it should look like this:

K=3s
9s+12k=82.80
12 x 3=36
9s+36s=45s
45s=82.80

Can you solve the rest now?
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