SSC CGL Model Paper 1

Question : 56 of 100

Marks: +1, -0

Chiru takes 9 hours more when he works alone in comparison of when he works with Kishan. While Kishan takes

6 1/4

hours more when he works alone in comparison to the time, when he works with Chiru.
How long it will take to complete the work together?

Solution:

Time (Chiru) = Time (Chiru + Kishan) + 9
Time (Kishan) = Time (Chiru + Kishan) +

6 1/4

Time (Chiru + Kishan) is given by

=√{9×6 1/4}

=√{9×25/4}=3×5/2=7 1/2

Hrs

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