SarkariPYQ

SSC CHSL 2021 PYQ — Question 62

SSC CHSL - 13 April 2021 - Shift 2 • Quantitative Aptitude • Q62

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Comprehension:
In the following passage, some words have been deleted. Fill in the blanks with the help of the
alternatives given. Select the most appropriate option for each blank.
Graduation Day was at hand. Primary school graduation (1) ______ in those days followed a
prescribed order-conventional, courteous and (2) ______. First the school principal made a
long speech (3) ______ encouragement and blessing for the future of the graduates. (4) ______
one of the representatives of the graduating class (5) ______ with a vote of thanks.

A and B can complete a work in 80 days and 96 days, respectively. They completed the work in 32 days with the help of C. How many days will C take to complete the entire work alone?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 120

No of days taken = Work/ Efficiency per day

L.C.M of 80,96,32 = 480

Efficiency of A = 480/80 = 6

Efficiency of B = 480/96 = 5

Efficiency of (A+B+C) = 480/32 = 15

Efficiency of C = (15 - 6 - 5) = 4

Work done by C = 480/4 = 120 days