Question

A number when decreased by 28% becomes 432. Find the number

Answer 1

From the given question the correct answer is 600.

SOLUTION

GIVEN

A number when decreased by 28% becomes 432.

TO DETERMINE

The number

EVALUATION

Let the required number = 100x

Now the number is decreased by 28%

So the number becomes

= 100x - 28x

= 72x

So by the given condition

72x = 432

⇒ x = 6

Hence the required number

= 100 × 6

= 600

Answer 2

SOLUTION

GIVEN

A number when decreased by 28% becomes 432.

TO DETERMINE

The number

EVALUATION

Let the required number = 100x

Now the number is decreased by 28%

So the number becomes

= 100x - 28x

= 72x

So by the given condition

72x = 432

⇒ x = 6

Hence the required number

= 100 × 6

= 600

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