During a 7-day book fair, the number of visitors doubled each day. If the fair opened on a Tuesday with 256 visitors, what was the attendance on the last day of that fair?

If p=3r, 18r = 6q and 4q=s, then what is the relation between p and s ?

A two-digit number has 6 in its unit digit. The sum of its digits is one fourth of the number itself. What is...

Zahir, after joining to a new job, received a 10% Raise each year for 4 consecutive years. If his salary after...

If 4 times an integer x is increased by 10, the result is always greater than 18 and less than 34. What is the...

A brand of paint costs Tk. 14 per liter, and 1 liter of paint will cover an area of 150 square feet. What is t...

In a village the growth rate of population is 5% every year. There are 1600 people in the beginning of 2008 wh...