SBI Junior Associate 2014 · Question 13 of 200

What will come in place of the question mark (?) in the following questions ? $$15 \div 12.5 \times 35 + 42.8 \times 2.5 =?^{2} + 10^{2}$$

simplification

A8
B6
C7.5
D5.2
E7Correct

Answer: E. 7

Explanation

Expression : $$15 \div 12.5 \times 35 + 42.8 \times 2.5 =?^{2} + 10^{2}$$ => $$\frac{15 \times 35}{12.5} + 107 = (x)^2 + 100$$ => $$42 + 107 - 100 = x^2$$ => $$x^2 = 149 - 100 = 49$$ => $$x = \sqrt{49} = 7$$

Source: SBI Clerk 27 July 2014 Paper with Solutions — Cracku · reliable-secondary

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