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Q.

30% of a number is 90, what is 90% of the same number ?

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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

a

270

b

720

c

740

d

290

answer is D.

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Detailed Solution

Let number = x

$\begin{array}{l} \frac{30}{100} \times x = 90 \\ x = 300 \\ \frac{90}{100} \times 300 = 270 \end{array}$

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30% of a number is 90, what is 90% of the same number ?