Model 6  Efficiency of the worker Practice Questions Answers Test with Solutions & More Shortcuts

Question : 11 [SSC GL Tier-I 2013]

A does 20% less work than B. If A can complete a piece of work in 7$1/2$ hours, then B can do it in

a) 5 hours

b) 6$1/2$ hours

c) 6 hours

d) 5$1/2$ hours

Question : 12 [SSC CHSL 2011]

A can do a work in 5 days less than the time taken by B to do it. If both of them together take11$1/9$ days, then the time taken by ‘B’ alone to do the same work (in days) is

a) 30

b) 15

c) 20

d) 25

Question : 13 [SSC CGL Tier-I 2016]

Shashi can do a piece of work in 20 days. Tanya is 25% more efficient than Shashi. The number of days taken by Tanya to do the same piece of work is :

a) 25

b) 15

c) 16

d) 18

Question : 14 [SSC CHSL 2011]

A is 30% more efficient than B, and can alone do a work in 23 days. The number of days, in which A and B, working together can finish the job is

a) 21 days

b) 11 days

c) 13 days

d) 20 days

Question : 15 [SSC CGL Prelim 2007]

To complete a work, A takes 50% more time than B. If together they take 18 days to complete the work, how much time shall B take to do it ?

a) 45 days

b) 30 days

c) 35 days

d) 40 days