Radha earns 22% of her investment. If she earns Rs 187, then how much did she invest?

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Rs. 850

Rs. 50

Rs. 80

Rs. 85

answer is A.

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Detailed Solution

Given, Radha earns 22% of her investment.
Let investment be Rs. x.
Her earnings = Rs 187.
As given in the question, 187 = 22% of x.
We know that a% of b =

\frac{a}{100} \times b

where a and b are real numbers.

187 = \frac{22}{100} \times x

x = \frac{187 \times 100}{22}

x = 850

The invested amount is Rs. 850 .
Hence, option 1 is correct.

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