Basic Maths Mcqs

Q.  A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?

a. 40 days
b. 50 days
c. 60 days
d. 70 days


ANSWER: See Answer
 
(A+B)’S 1 day’s work = [1/15−1/20]=1/60
A alone can finish it in 60 days
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