Two pipes A and B can fill a tank in 6 hours and 8 hours respectivley. If both the pipes are opened together, then after how many hours should B be closed so that the tank is full in 4 hours ?
A3
B8
C8/3
D2/3
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
Six typists can type a given data in 16 days. How many days will 4 typists take to do the same work?
There are 3 taps, A, B and C, in a tank. These can fill the tank in 10 h, 20 h and 25 h, respectively. At first, all three taps are opened simultaneously. After 2 h, tap C is closed and tap A and B keep running. After 4 h, tap B is also closed. The remaining tank is filled by tap A alone. Find the percentage of work done by tap A itself.
Prakash and Vinesh can complete a certain piece of work in 10 and 8 days, respectively, They started to work together, and after 3 days, Vinesh left. In how many days will Prakash complete the remaining work?
ഒരു കമ്പ്യൂട്ടർ ലാബിൽ 6 കൂട്ടികൾക്ക് 3 കമ്പ്യൂട്ടർ ഉണ്ട്. 24 കൂട്ടികൾക്ക് എത്ര കമ്പ്യൂട്ടർ ഉണ്ടാവും?
A can do a piece of work in 20 days and B in 15 days. With the help of C, they finish the work in 5 days. C can alone do the work in