Q.
A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is

A) 1/4

B) 1/10

C) 7/15

D) 8/15

A) 1/4

B) 1/10

C) 7/15

D) 8/15

Q.
A alone can complete a work in 16 days and B alone in 12 days. Starting with A, they work on alternate days. the total work will be completed in

A) 12 days

B) 13 days

C) \(13\frac{5}{7}\)days

D) \(13\frac{3}{4}\) days

A) 12 days

B) 13 days

C) \(13\frac{5}{7}\)days

D) \(13\frac{3}{4}\) days

Q.
A contractor agreeing to finish a work in 150 days, employed 75 men each working 8 hours daily. After 90 days, only 2/7 of the work was completed. Increasing the number of men by ________ each working now for 10 hours daily, the work can be completed in time.

A) 150 men

B) 180 men

C) 300 men

D) 100 men

A) 150 men

B) 180 men

C) 300 men

D) 100 men

Q.
It was calculated that 75 men could complete a piece of work in 20 days. When work was scheduled to commence, it was found necessary to send 25 men to another project. How much longer will it take to complete the work?

A) 20 days

B) 25 days

C) 35 days

D) 30 days

A) 20 days

B) 25 days

C) 35 days

D) 30 days

Today's Challenging Question

Q.
Ajay & Bimal can do a price of work in 10 days, Bimal & Chetan can do in 15 days and Chetan and Ajay in 20 days. They work together for 6 days and then Ajay leaves and now Bimal & Chetan work together for 4 more days. If Bimal leaves, how long will Chetan take to finish the work?

A) 12 days

B) 10 days

C) 16 days

D) none

0 members solved

A) 12 days

B) 10 days

C) 16 days

D) none

0 members solved

Q.
Ajay & Bimal can do a price of work in 10 days, Bimal & Chetan can do in 15 days and Chetan and Ajay in 20 days. They work together for 6 days and then Ajay leaves and now Bimal & Chetan work together for 4 more days. If Bimal leaves, how long will Chetan take to finish the work?

A) 12 days

B) 10 days

C) 16 days

D) none

A) 12 days

B) 10 days

C) 16 days

D) none

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Correct Answer:8/15Solution:A's 1 day work is: 1/15

B's 1 day work is:1/20

A+B 's 1 day work is : 1/15+1/20 =7/60

A+B 4 days work is: 7/60*4=7/15

The remaing work left is 1-7/15 =8/15

so, the answer is 8/15