Maths / Comparing Quantities / Using OF Operator in Percentages

QUESTION
 

Marks of A and B are respectively 30% and 37% less than C. How much per cent of marks of B is less than A?

OPTIONS
A. 

frac{100}{9}

B. 

10%

C. 

9%

D. 

7%

Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

Marks of C = x

Marks of A = 0.7x

Marks of B = 0.63x

0.7x - 0.63x = 0.07x

large frac{0.07x}{0.7x}X100

10%

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