The current of a stream runs at the rate of 4 kmph. A boat goes 6 km and back to the starting point in 2 hours,then find the speed of the boat in still water?
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In how much time would the simple interest on a certain sum be 0.125 times the principal at 10% per annum? |
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Find the cost of fencing around a circular field of diameter 28 m at the rate of Rs.1.50 a meter? |
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A pupil`s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is: |
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The H.C.F of two numbers is 11 and their L.C.M is 7700. If one of the numbers is 275, then the other is: |
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If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: |
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Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes and 10 minutes respectively.When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of solution R in the liquid in the tank after 3 minutes? |
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The principal that amounts to Rs. 4913 in 3 years at 6 1/4 % per annum C.I. compounded annually, is? |
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If the height of a cone is increased by 100% then its volume is increased by? |
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Find the one which does not belong to that group? |
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A sells a bicycle to B at a profit of 20%. B sells it to C at a profit of 25%. If C pays Rs. 225 for it, the cost price of the bicycle for A is: |
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