One pen costs $
y. One marker costs $(
y + 15). One colouring book costs $4
y.
- Henry bought 6 pens, 3 markers and 1 colouring book. How much did he spend? Simplify your answer in terms of y.
- If y = 17, how much did Henry spend altogether?
(a)
Cost of 6 pens = 6 x
y = $6
y Cost of 3 markers = 3 x (
y + 15) = $(3
y + 45)
Cost of 1 colouring book = $4
y Total amount that he spent
= 6
y + 3
y + 45 + 4
y= 6
y + 3
y + 4
y + 45
= $(13
y + 45)
(b)
If
y = 17,
total amount that he spent
= 13
y + 45
= (13 x 17) + 45
= 221 + 45
= $266
Answer(s): (a) $(13
y + 45) or $(45 + 13
y); (b) $266