If x = 0.25 and y = 0.16, the value of the expression y by x plus the square root of x times y minus x times y is

A0.6

B0.8 ✓ Correct

C0.45

D0.58

Correct answer: (B) 0.8

Explanation

The value is 0.8.

y/x = 0.16/0.25 = 0.64.

root(x times y) = root(0.25 x 0.16) = root(0.04) = 0.2.

x times y = 0.25 x 0.16 = 0.04.

Total = 0.64 + 0.2 - 0.04 = 0.8.

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