55.5
63.5
75
99.25
A pipe can empty a tank in 40 min. A second pipe with diameter twice much as that of the first is also attached with the tank to empty it. The two together can empty the tank in
A pipe can fill a tank in 0.9 hours and another pipe can empty in 0.7 hours. If tank is completely filled and both pipes are opened simultaneously then 450 liters of water is removed from the tank is 2.5 hours. What is the capacity of the tank?
A pipe of diameter d can empty a tank in 40 min then how much time a pipe of diameter 2d will take to empty it?
A plane flies along the four sides of a square field at a speed of 200, 400, 600 and 800 km/hr. Then find the average speed of plane around the square field.
A plane left half an hour later than the scheduled time and in order to reach its destination 1500 kilometers away in time, it had to increase its speed by 33.33 percent over its usual speed. Find its increased speed.
A plane mirror is kept in front of a clock. If the actual time is 3 : 25, what time would the reflection show (if we notice only the positions of the two hands of the clock and do not pay attention to the numerals on the dial) ?
A population of variety of tiny bush in an experiment field increased by 10% in the first year, increased by 8% in the second year but decreased by 10% in third year. If the present number of bushes in the experiment field is 26730, then the number of variety of bushes in beginning was:
A problem is given to three students whose chances of solving it are 1/2, 1/3 and 1/4 respectively. What is the probability that the problem will be solved?
A profit of 105 is made after giving a discount of 5% in a T.V. If the marked price of the T.V. is рд░реБреж 2640.00, the cost price of the TV was :
A profit of 12% is made when a mobile phone is sold at Rs. P and there is 4% loss when the phone is sold at Rs. Q. Then Q : P is = ?
