10,10,16,40,100

An equal sum is invested for seven years in scheme A offering simple interest at x% p.a. and in scheme B for two years offering compound interest at 10% p.a. (compounded annually). The interest earned from scheme A is thrice of the interest earned from scheme B. Had the ratio of interest been x – 4% simple interest per annum in scheme A, the difference in the interest earned from both the schemes would have been INR 700/-, What was the sum invested in each of the schemes?

The time taken by a boat to travel a distance upstream is twice the time taken by it to travel the same distance downstream. What is the speed of the boat upstream if it travels 20 km downstream in 1 hour 40 min ? (in km/h)

To reach Point B at 10 a.m. from Point A, Abhi will have to travel at an average speed of 15 km/h. He will reach point B at 12 p.m., If he travels at an average speed should Abhi travel to reach Point B at 9 a.m.

Fredrick after spending 20% of his monthly salary in buying electronic goods and 10% of the monthly salary in repair work of furniture, invested 30% of the remaining amount in fixed deposits. If he was left with INR 18,963/-, how much is his monthly salary ?

B is 8 years elder to A and B is also 8 years younger to C. 12 years hence, the respective ratio between the ages of A and C will be 5 : 9. What is the sum of present ages of A, B and C