SSC CPO SI and ASI Model Paper 8

Question : 127 of 200

Marks: +1, -0

Sanjay completes 40% of a work in 10 days. Sunny is 25 % more efficient than Sanjay and Dharam is 100 % more efficient than Sunny. In how many days will the work be finished if they work together?

$84 /19$
$80 /19$
$90/ 19$
None of these

Validate

Solution:

(4) Time taken by Sanjay to completethe work

=10/0.4= 25

⇒ One day work of Sanjay

= 1/25

Now, One day work of Sunny =

1.25/25=1/20

One day work of Dharam =

2 ×1/20=1/10

One day work of all three persons

=1/25+ 1/ 20 +1/10= 19/100

∴ Required time

= 100/19

days

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