SSC CGL 7 06 2019 Shift 1 Paper

Question : 52 of 100

Marks: +1, -0

The ratio of the efficiencies of A, B and C is 3 : 5 : 1,Working together, they an complete a piece of work in 5 days. A and B work together for 3 days. The remaining work will be completed by C alone in ?

18 days
24 days
21 days
15 days

Validate

Solution:

Efficiencies of

A: B: C=3: 5: 1

Total work

=(3+5+1) \× 5

=45

units Work done by

A+B

in 3 days

=(3+5) \× 3

=24

units
Remaining work

=45-24=21

Days taken by

C=\ {21}/{1}=21

days

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