Chain Rule - Quantitative Aptitude (MCQ) questions for Q. 747

Q.  If a carpenter completes 3/8th of his work in 6 days, then how many more days will he require completing his remaining work?
- Published on 06 Jul 15

a. 10
b. 12
c. 6
d. 16

ANSWER: 10
 
As 3/8th of the work is completed, the work remaining is 5/8th of the total.
(3/8):6::(5/8):x
x = 6*(5/8)/(3/8)
x = 10

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