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Let the speed of the boy in still water be x kmph. Then, (x + 4) × 5 = (x – 4) × 7 => 5x + 20 = 7x - 28 => 2x = 48 => x = 24 kmph
Yeshudas borrowed a certain amount from a Bank at an interest rate of 2.5% p.a. and after 4 years , he repaid a total amount of 46,200 to the Bank. How ...
A certain amount will become six times in 20 years. How long does it take for the same amount to become 5 times? Assume the same rate of simple interest...
Rahul deposits a sum of money at an annual compound interest rate of 15%. After 1 year, the interest accumulated amounts to Rs. 180. If he increases his...
A woman lent Rs. 29500 at 13% p.a. compound interest, compounded annually for two years. After two years, the total amount earned by the woman is again ...
A certain sum when invested for 3 years in a scheme offering simple interest of 20% p.a. gives an interest of Rs. 1470. What is 130% of the sum invested?
Determine the value of 'K' if an investment of Rs. 30,000, made under a simple interest scheme at an annual rate of 18%, yields an interest amount of Rs...
Out of a total sum of ₹5,000, Danish invested one part at 12% simple interest per annum and the remaining part at 10% simple interest per annum. If th...
Mr. X invested Rs. 900 in two schemes, A and B in the ratio of 7:3, respectively. Scheme A and B are offering simple interest at rate of 7% per annum an...
A man deposited Rs. 10000 at 10% compound interest, compounded annually while Rs. 8900 at 13% simple interest per annum. What will be the difference bet...
