self Maths Puzzle

Two equal amounts of money are deposited in two banks, each at 15% per annum, simple interest for 3 1/2 years and 5 years. If the difference between their interest is Rs 144, each sum is

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let the sum is x
(x*5*15)/100-(x*3.5*15)/100=144
45x =144*200
x=640 rs(ans)
11 years agoHelpfull: Yes(2) No(0)

self Other Question

A invested Rs 80000 in a business. After few months B joined him with Rs 72000/ At the end of the year the total profit was divided between them in the ratio 4:3. The number of months after which B joined is A reduction of 20 % in the price of mangoes enables a person to purchase 10 more for Rs 160 The cost of the mango before reduction was