Advertisements
Advertisements
प्रश्न
A is thrice as fast as B. If B can do a piece of work in 24 days then, find the number of days they will take to complete the work together
उत्तर
If B does the work in 3 days, A will do it in 1 day.
B complete the work in 24 days.
∴ A complete the same work in `24/3` = 8 days.
∴ (A + B) complete the work in `"ab"/("a" + "b")` days.
= `(24 xx 8)/(24 + 8)` days
=`(24 xx 8)/32` days
= 6 days
`(24 xx 8)/4`
They together complete the work in 6 days.
APPEARS IN
संबंधित प्रश्न
A can finish a job in 3 days whereas B finishes it in 6 days. The time taken to complete the job working together is __________ days
If 5 persons can do 5 jobs in 5 days, then 50 persons can do 50 jobs in _________ days
A can do a work in 24 days. If A and B together can finish the work in 6 days, then B alone can finish the work in ________ days
A alone can do a piece of work in 35 days. If B is 40% more efficient than A, then B will finish the work in ___________ days
210 men working 12 hours a day can finish a job in 18 days. How many men are required to finish the job in 20 days working 14 hours a day?
A cement factory makes 7000 cement bags in 12 days with the help of 36 machines. How many bags can be made in 18 days using 24 machines?
If 6 container lorries can transport 135 tonnes of goods in 5 days, how many more lorries are required to transport 180 tonnes of goods in 4 days?
A can do a piece of work in 12 hours, B and C can do it 3 hours whereas A and C can do it in 6 hours. How long will B alone take to do the same work?
Carpenter A takes 15 minutes to fit the parts of a chair while Carpenter B takes 3 minutes more than A to do the same work. Working together, how long will it take for them to fit the parts for 22 chairs?
A small-scale company undertakes an agreement to make 540 motor pumps in 150 days and employs 40 men for the work. After 75 days, the company could make only 180 motor pumps. How many more men should the company employees so that the work is completed on time as per the agreement?
