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UPSC CDS 1 2018 Math Paper
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© examsnet.com
Question : 26
Total: 100
A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. How many additional men should he employ so that the whole work is finished in time ?
[2018 CDS-I]
75
85
100
120
Validate
Solution:
Assume that he employed x more men to finish the work on time
using
m
1
d
1
w
1
=
m
2
d
2
w
2
we get
200
×
50
1
4
=
(
200
+
x
)
+
100
3
4
⇒
x
=
300
−
200
=
100
© examsnet.com
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