a. 20 %
b. 24 %
c. 30 %
d. 32 %
e. 70 %
According to the book the answer is 24 %, but keep finding 32 %.
It seems easy.
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nyotamalaika
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The output of a factory was increased by 10% to keep up with rising demand. To handle the holiday rush, his new out put was increased by 20%. By approximately what percent would the output now have to be decreased in order to restore the original output?
a. 20 %
b. 24 %
c. 30 %
d. 32 %
e. 70 %
According to the book the answer is 24 %, but keep finding 32 %. It seems easy.
a. 20 %
b. 24 %
c. 30 %
d. 32 %
e. 70 %
According to the book the answer is 24 %, but keep finding 32 %.
It seems easy.-
givemeanid
- Master | Next Rank: 500 Posts
- Posts: 277
- Joined: Sun Jun 17, 2007 2:51 pm
- Location: New York, NY
- Thanked: 6 times
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Let original output be 100.
After 10% increase: 110
After further 20% increase: 110 + 0.2(110) = 132
To restore the output to original level, it needs to be decrease by 32.
% = 32*100/132 = 24.24%
Remember, that you are decreasing the output by 32 from 132. Not 100. 32 is the 'tricks/traps' answer.
After 10% increase: 110
After further 20% increase: 110 + 0.2(110) = 132
To restore the output to original level, it needs to be decrease by 32.
% = 32*100/132 = 24.24%
Remember, that you are decreasing the output by 32 from 132. Not 100. 32 is the 'tricks/traps' answer.
So It Goes
-
nyotamalaika
- Newbie | Next Rank: 10 Posts
- Posts: 8
- Joined: Thu Jul 12, 2007 9:21 pm
- Location: Congo Democratic Republic
Thanks Givemegivemeanid wrote:Let original output be 100.
After 10% increase: 110
After further 20% increase: 110 + 0.2(110) = 132
To restore the output to original level, it needs to be decrease by 32.
% = 32*100/132 = 24.24%
Remember, that you are decreasing the output by 32 from 132. Not 100. 32 is the 'tricks/traps' answer.
