Here’s and example of a SMART MATH problem for PERCENTAGES.
Problem
Some goods together cost $35849.50. th of them are sold at a profit of 30%. At what profit / loss should the remaining be sold to realize 20% gain on the whole?
- 15% loss
- 10% loss
- 5% loss
- 10% gain
- 15% gain
The Usual Method
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of 35849.50 =
30% profit =
20% profit on whole =
if x% be the loss / gain on
th of 35849.50 =
Then,
Hence 10% loss.
(Ans: 2)
Estimated Time to arrive at the answer = 60 seconds.
Using Technique
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Irrespective of the original amount, you can simply solve as follows:
30 + x = 20
. Hence 10% loss.
(Ans: 2)
Estimated Time to arrive at the answer = 5 seconds.
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2 replies on “[Smart Math] Percentages Problem 35”
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