If all three pipes are opened for 2 minutes to fill the tank each alternatively in the sequence of A then C and then B.  Calculate water filled by pipes A is what % of water filled by pipe C?

Mr. Duggal invested Rs. 20, 000 with rate of interest at 20 p.c.p.a. The interest was compounded half yearly for first year and in the next year it was compounded yearly. What will be the total interest earned at the end of two years? 

Percentage of decrease in the number of accidents from May to June is:

A vertical pole and a vertical tower are standing on the same level ground. Height of the pole is 10 metres. From the top of the pole the angle of elevation of the top of the tower and the angle of depression of the foot of the tower are 60° and 30° respectively. The height of the tower is

If a man estimates his loss as 20% of the selling price, then his loss percent is:

If 72 men can build a wall of 280 m length in 21 days, how many men could take 18 days to build a similar type of wall of length 100 m? 

If an item is sold for Rs. 270, there is a loss of 10 percent on it , then what will be the cost price of that item?

₹ 180 contained in a box consists of one rupee, 50 paise and 25 paise coins in the ratio 2 : 3 : 4 . What is the number of 50 paise coins?