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RRB RPF RPSF SI and CONS Model Papers 3 with solutions
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© examsnet.com
Question : 9
Total: 120
A contractor undertakes to built a walls in 50 days. He employs 50 peoples for the same. However after 25 days he finds that only 40% of the work is complete. How many more man need to be employed to complete the work in time?
25
30
35
20
Validate
Solution:
(a) 50 men complete 0.4 work in 25 days.
Applying the work rule,
m
1
×
d
1
×
w
2
=
m
2
×
d
2
×
w
1
we have,
50
×
25
×
0.6
=
m
2
×
25
×
0.4
or
m
2
=
50
×
25
×
0.6
25
×
0.4
=
75
m
e
n
Number of additional men required
=
(
75
–
50
)
=
25
© examsnet.com
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