In one year, the population of city increased by 20%. The next year, it decreased by 10%. What was the percentage increase in the population over the two years?

The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one....

If a number exceeds another number by 13 and the larger number is 1.5 times the smaller number, then the small...

The effective speed of a boat travelling downstream is 20 kmph, whereas it is 10 kmph upstream. What is the sp...

If window received 1/3 of her hushand's estate, and each of her three sons received 1/3 of the balance. If the...

If the coordinates of A and B are (4, 1) and (-2, 7) respectively, then the coordinates of the midpoint of AB...

Mahfuz has a total of Tk. 480 in the denominations of one Taka, five Taka and Ten taka nones. The numbers of d...