RRB NTPC Mains or Stage 2 Model Paper 9 with solutions

Question : 32 of 120

Marks: +1, -0

A can do a piece of work in 10 days, while B alone can do it in 15 days. They work together for 5 days and the rest of the work is done by C in 2 days. If they get Rs 450 for the whole work, how should they divide the money ?

Rs 225, Rs 150, Rs 75
Rs 250, Rs 100, Rs 100
Rs 200, Rs 150, Rs 100
Rs 175, Rs 175, Rs 100

Validate

Solution:

(a) Work done by A and B in 5 days =

[1/10+1 /15]×5=5/6

Work remaining =

=1-5/6=1/6

∴C alone can do the work in 6 × 2 = 12 days
Ratio of their share work

= 5/10:5/15:2/12=3 : 2 :1

Share of wages = Rs 225, Rs 150, Rs 75.

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