A discount voucher offering 15% off is used to pay a bill. after using the voucher, the bill is reduced to £36.72. How much was the bill before applying the voucher discount?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21

Given that s is the centroid of triangle mno, find sq.