A alone can complete a work in 20 days with full efficiency.

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A alone can complete a work in 20 days with full efficiency. If the efficiency of A decreases by 20 percent. then A alone can do the same work in how many days?

[SSC CHSL 20th March 2023 Shift-4 With Answers]

A

30

B

20

C

25

D

36

EXPLANATION

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