If 7 maids with 7 mops cleaned 7 floors in 7 hours how long would it take 3 maids to mop 3 floors with 3 mops?
a. `7/3hou r s` b. `3\ hou r s` c. `(49)/3hou r s` d. `7\ hou r s`

Four gardeners with four grass mowers mow 400 sq. m of ground in 4 hours. How long would it take for eight gardeners with eight grass mowers to mow 800 sq. m of ground? 4 hou r s b. 6 hou r s c. 8 hou r s d. 12 hou r s

A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone take to do it? 8 hou r s b. 10 hou r s c. 12 hou r s d. 24 hou r s

An outlet pipe can empty a cistern in 3 hours. In what time will the empty 2/3 part of the cistern? 3 hou r s b. 5 hou r s c. 2 hou r s d. 4 hou r s

5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for 8 hou r s b. 9 hou r s c. 10 hou r s d. 12 hou r s

A bus left X for point Y. Two hours later a car left point X for Y and arrived at Y at the same time as the bus. If the car and the bus left simultaneously from the opposite ends X and Y towards each other, they would meet 1 1/3 hours after the start. How much time did it take the bus to travel form X to Y? 2 hou r s b. 4 hou r s c. 6 hou r s d. 8 hou r s

A car takes 15 minutes less to cover a distance of 75 km, if it increases its speed by10 km/hr from its usual speed. How much time would it take to cover a distance of 300 km using this speed? 5 hou r s b. 5 1/2hou r s c. 6 hou r s d. 8 6 1/2 hours

A takes 2 hours more than B to walk d km, but /it A doubles his speed, then he can make it in 1 hour less than B. How much time does B require for walking d k m ? d/2 hou r s b. 3 hou r s c. 4 hou r s d. (2d)/3hou r s

In a flight of 6000 km, an aircraft was slowed down due to bad weather. The average speed for the trip was reduced by 400 kmph and the time of flight increased by 30 minutes. The original planned duration of the fight was 2 1/2hou r s b. 3 1/3hou r s c. 4 1/3hou r s d. 5 1/3hou r s

Reena, Aastha and Shloka can independently complete a piece of work in 6 hours, 4 hours and 12 hours respectively. If they work together, how much time will they take to complete that piece of work? 2 hou r s b. 5 hou r s c. 6 hou r s d. hou r s e. none of these

A tap can completely fill a water tank in 8 hours. The water tank has a hole in it through which the water leak, out. The leakage will cause the full water tank to get mph it, 12 hours. How much time will it take for the tap to fill the tank completely with the hole? 16 hou r s b. 18 hou r s c. 24 hou r s d. none of these