[Smart Math] Percentages Problem 35

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?

1. 15% loss
2. 10% loss
3. 5% loss
4. 10% gain
5. 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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