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A sum of money invested at compound interest to Rs. 800 in 3 years and to Rs 840 in 4 years. The rate on interest per annum is.
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A train covers a distance in 50 minutes, if it runs at a speed of 48kmph on an average. Find the speed at which the train must run to reduce the time of journey to 40 minutes.
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Two boys starting from the same place walk at a rate of 5kmph and 5.5kmph respectively. What time will they take to be 8.5km apart, if they walk in the same direction?
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Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour ?
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2 trains starting at the same time from 2 stations 200 km apart and going in opposite direction cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds ?
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A man saves Rs 200 at the end of each year and lends the money at 5% compound interest. How much will it become at the end of 3 years.
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Find compound interest on Rs. 7500 at 4% per annum for 2 years, compounded annually
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The present worth of Rs.169 due in 2 years at 4% per annum compound interest is
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At what rate of compound interest per annum will a sum of Rs. 1200 become Rs. 1348.32 in 2 years
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The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is
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