11)

A can complete a certain work in 35 days and B can complete the same work in 15 days. They worked together for 7 days, then B left the work. In how many days will A alone complete 60% of the remaining work?

SSC CPO 2020

A)

15

B)

8

C)

10

D)

7

12)

P and Q together can do a work in 12 days. P alone can do the same work in 36 days. In how many days can Q alone complete two-third part of the same work?

SSC CPO 2020

A)

18

B)

15

C)

21

D)

12