Question

Rahul and Sachin can complete a work in 60 days and 45 days respectively. Rahul starts working with 120% of his capacity and Sachin with 80% of his capacity. In how many days will they complete 75% of the work if they work together?​

Answer 1

Answer:

Step-by-step explanation:

i

Answer 2

Answer:

They both will complete work in $19.85$ days.

Step-by-step explanation:

It is given that Rahul can complete a work in $60$ days.

Sachin can complete a work in $45$ days.

Taking LCM, we get
LCM of $60,45=180$

There are $180$ units of work.

Efficiency of Rahul is $180/60=3$

Efficiency of Sachin is $180/45=4$

Their combine one day of work $=1.2(3)+0.8(4)$

$=6.8$ units.

$75$% of work is $0.75*180=135$ units.

They both will work combinely with given efficiency, they will complete work in $135/6.8=19.85$ days.

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