A Completes 50% Of The Work In 10 Days And Then Decides To Take Help

1.	A Completes 50% Of The Work In 10 Days And Then Decides To Take Help From B And C. B Is Half As Efficient As A And Similarly C Is Half As Efficient As B. How Many More Days Will They Take To Complete The Work?
Answer» As A completes half of the work in 10 days, he/she will complete the work in 20 days. As B is half as EFFICIENT as A and C is half as efficient as B, They will complete the work in 1/20 + 1/40 + 1/80 = 7/80. So 7/80 of the work in a SINGLE day. So, they can complete the entire work in 80/7 days THEREFORE, they can complete the remaining 50% of the work in (1/2) x 80/7 = 40/7 days. As A completes half of the work in 10 days, he/she will complete the work in 20 days. As B is half as efficient as A and C is half as efficient as B, They will complete the work in 1/20 + 1/40 + 1/80 = 7/80. So 7/80 of the work in a single day. So, they can complete the entire work in 80/7 days Therefore, they can complete the remaining 50% of the work in (1/2) x 80/7 = 40/7 days.

A Completes 50% Of The Work In 10 Days And Then Decides To Take Help From B And C. B Is Half As Efficient As A And Similarly C Is Half As Efficient As B. How Many More Days Will They Take To Complete The Work?

Answer»

As A completes half of the work in 10 days, he/she will complete the work in 20 days.

As B is half as EFFICIENT as A and C is half as efficient as B,

They will complete the work in 1/20 + 1/40 + 1/80 = 7/80. So 7/80 of the work in a SINGLE day.

So, they can complete the entire work in 80/7 days

THEREFORE, they can complete the remaining 50% of the work in (1/2) x 80/7 = 40/7 days.

As A completes half of the work in 10 days, he/she will complete the work in 20 days.

As B is half as efficient as A and C is half as efficient as B,

They will complete the work in 1/20 + 1/40 + 1/80 = 7/80. So 7/80 of the work in a single day.

So, they can complete the entire work in 80/7 days

Therefore, they can complete the remaining 50% of the work in (1/2) x 80/7 = 40/7 days.