Q61 / 125 · BITSAT 2014 · Mathematics

IfM. D. is 12, the value of S.D. will be

Correct answer
A
15
B
12
C
24
D
None of these

Solution

We know that Q.D $=\frac{5}{6} \times M \cdot D .=\frac{5}{6} \times 12=10$ $\therefore \mathrm{S} . \mathrm{D}=\frac{3}{2} \times Q \cdot D .=\frac{3}{2} \times 10 \Rightarrow S . D .=15$

Hence, the correct answer is option: 'A'.

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