Percentage Mcqs

Q.  Two-fifth of one-third of three-seventh of a number is 15. What is 40% of that number?

a. 72
b. 84
c. 136
d. 140
e. None of these


ANSWER: See Answer
 
Let the number be x. Then,

2/5 of 1/3 of 3/7 of
x = 15 => x = (15 * 5/3 * 3 * 5/2) = 525/2
40% of 525/2 = (40/100 * 525/2) = 105
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