Maths year 11
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Original post by 34908seikj
You want to add 10% on the 5000
10% as a decimal is 0.1
and 100% as a decimal is 1
If you were to add 10% of 5000 back onto the 5000, you would have 110% of the original value
Therefore we multiply by 1.1 as 110% = 1.1
When you want to increase by a percentage aways have the value larger than 1, as it accounts for your current value. want to increase by 58% = 1.58, increase by 240% = 2.4 etc. etc.
10% as a decimal is 0.1
and 100% as a decimal is 1
If you were to add 10% of 5000 back onto the 5000, you would have 110% of the original value
Therefore we multiply by 1.1 as 110% = 1.1
When you want to increase by a percentage aways have the value larger than 1, as it accounts for your current value. want to increase by 58% = 1.58, increase by 240% = 2.4 etc. etc.
I got this
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Original post by z_o_e
Correct! You got this.
Original post by 34908seikj
Correct! You got this.
But the answer page states this :/
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Original post by z_o_e
The book is wrong.
Did it two different ways - either the question is wrong or the answer is.
Original post by 34908seikj
Correct! You got this.
Yap I agree.
As the other ones I got right
What if I get this on a non calc paper?
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Original post by z_o_e
Yap I agree.
As the other ones I got right
What if I get this on a non calc paper?
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As the other ones I got right
What if I get this on a non calc paper?
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It won't be. But you can break numbers down. Gimme a sec
Edit:
(edited 7 years ago)
Original post by 34908seikj
It won't be. But you can break numbers down. Gimme a sec
Edit:
Edit:
Don't really understand this.
But it's okay.
I don't know where the 20% comes from :/ is it from the 2 years?
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Original post by z_o_e
Don't really understand this.
But it's okay.
I don't know where the 20% comes from :/ is it from the 2 years?
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But it's okay.
I don't know where the 20% comes from :/ is it from the 2 years?
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oh no, I was just using that as an example as to how you calculate compound interest without a calculator.
But because I'm ****ing stupid (i've literally just realised) I've forgot the do the second year ;/.
Basically you take the value from the first year then use that as your "starting" value.
So after the first year we have 10800
10800 = 100%
1080 = 10%
2160 = 20%
10800+2160 = 12 960 - amount after 2 years with 20% compound interest (starting with 9000)
Original post by 34908seikj
oh no, I was just using that as an example as to how you calculate compound interest without a calculator.
But because I'm ****ing stupid (i've literally just realised) I've forgot the do the second year ;/.
Basically you take the value from the first year then use that as your "starting" value.
So after the first year we have 10800
10800 = 100%
1080 = 10%
2160 = 20%
10800+2160 = 12 960 - amount after 2 years with 20% compound interest (starting with 9000)
But because I'm ****ing stupid (i've literally just realised) I've forgot the do the second year ;/.
Basically you take the value from the first year then use that as your "starting" value.
So after the first year we have 10800
10800 = 100%
1080 = 10%
2160 = 20%
10800+2160 = 12 960 - amount after 2 years with 20% compound interest (starting with 9000)
Awh that's fine
I'm going to revise this now.
And if you can, can you explain depreciation?
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Original post by z_o_e
Awh that's fine
I'm going to revise this now.
And if you can, can you explain depreciation?
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I'm going to revise this now.
And if you can, can you explain depreciation?
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It's essentially the opposite of compound interest; instead of increasing in value, it decreases.
To calculate compound interest we do, for example 1000*1.1^2 - This will give us the value after 2 years at a rate of 10% compound interest
Now for deprecation we would do 1000*0.9^2 - This will give us the value after 2 years at a rate of deprecation at 10%. (It goes down by 10% of the current value per year)
Just remember with deprecation the decimal must be lower than 1.
Original post by 34908seikj
It's essentially the opposite of compound interest; instead of increasing in value, it decreases.
To calculate compound interest we do, for example 1000*1.1^2 - This will give us the value after 2 years at a rate of 10% compound interest
Now for deprecation we would do 1000*0.9^2 - This will give us the value after 2 years at a rate of deprecation at 10%. (It goes down by 10% of the current value per year)
Just remember with deprecation the decimal must be lower than 1.
To calculate compound interest we do, for example 1000*1.1^2 - This will give us the value after 2 years at a rate of 10% compound interest
Now for deprecation we would do 1000*0.9^2 - This will give us the value after 2 years at a rate of deprecation at 10%. (It goes down by 10% of the current value per year)
Just remember with deprecation the decimal must be lower than 1.
I did this now how is it ?
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Original post by z_o_e
I was unsure what you were doing, considering you were asking about deprecation.
Original post by 34908seikj
I was unsure what you were doing, considering you were asking about deprecation.
I was increasing not deprecation this
I'm working deprecation after a few questions x
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Original post by z_o_e
I was increasing not deprecation this
I'm working deprecation after a few questions x
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I'm working deprecation after a few questions x
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ah okay, but do you see how your answer compared to mine (your answer was a tiny bit off mine lol)
Original post by 34908seikj
ah okay, but do you see how your answer compared to mine (your answer was a tiny bit off mine lol)
Yepp I'm making these examples up myself by following yours lol
Here I did this
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Original post by z_o_e
Yepp I'm making these examples up myself by following yours lol
Here I did this
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Here I did this
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Yeah, they're correct. I think you've got the hang of this now
Original post by 34908seikj
Yeah, they're correct. I think you've got the hang of this now
Thank god!
I hated percentages. I'm actually loving them now.
I hope I get the hang of locai, bearings and sectors now!
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Original post by 34908seikj
Yeah, they're correct. I think you've got the hang of this now
Can you do a quick example of bearings please.
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Original post by z_o_e
Here
Quick Reply
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