The average of a group of 10 students is 15 years. When 5 more students joined the group, the average age rose by 1 year. What is the average age of the newly joined students?

What is the perimeter, in meters, of a rectangular garden 6 meters wide that has the same area as a rectangula...

A corporation that had Tk. 115.19 billion in profits for the year paid out Tk. 230.10 million in employee bene...

Two banks offer interest rate of 6% and 7% respectively on savings account. Mr. Faruq deposited a total amount...

If 3/x=2 and y/4=3, then 3+y/x+4=?

Of the total amount that Jill spent on a shopping trip, excluding taxes, she spent 50% on clothing 20% on food...

Company C produces toy trucks at a cost of Tk. 5 each for the first 100 trucks and Tk. 3.5 for each additional...