The pencil cost four times as much as the stapler. Vaidev bought 1 pencil and 5 staplers for $18.
- How much did one stapler cost?
- How much did one pencil cost?
(a)
Cost of the stapler = 1 u
Cost of 5 staplers = 5 x 1 u = 5 u
Cost of the pencil = 4 x 1 u = 4 u
Total cost = 5 u + 4 u = 9 u
9 u = 18
1 u = 18 ÷ 9 = 2
Cost of 1 stapler
= 1 u
= $2
(b)
Cost of 1 pencil
= 4 u
= 4 x 2
= $8
Answer(s): (a) $2; (b)$8