Decimals and Fractions Practice Test 1

Question : 7 of 40

Marks: +1, -0

A student is asked to multiply a number by

9 /19

. But he divides the number by

9 /19

and gets 560 more than the original result. What is the number?

Solution:

Let the number be x.
Then,

19/9x-9/19x=560

361x-81x=560×171

280x=560×171

x={560×171}/280=342

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