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Ram borrows a sum of money from Shyam for a period of 5 years. Ram paid 9/8
times the sum after 5 years. Find the rate of simple interest.

Half of the volume of petrol and kerosene mixture of ratio 7:5 is converted into a mixture of ratio 3:1 by the replacement method. While the mixture of ratio 7:5 was formed from the mixture of 7:3 by adding the kerosene in it . If 240 ltr petrol is required in the replacement method, what is the total amount of kerosene was added to prepare the mixture of 7:5 ?

Abc is a right angled triangle in which ∠a = 90°, ab = 5 cm and ac = 12 cm. what is the approximate volume (in cm3) of the double cone formed by rotating the triangle about its hypotenuse?

In how many ways 10 chocolate can be given To A, B, C, D such that A always gets more chocolates than b

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The ratio of the effeciencies of A ,B and C are in the ratio of 7:5:8. Working together then they complete a work in 42 days. B and C work together for 21 days and the remaining work was completely by A alone. Th e whole work was complete is:

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