Gwen bought 2 kg of apples at $
n per kg and 3 kg of honeydews at $3
n per kg.
- Find the amount that she paid for the fruits in terms of n.
- If n = 7, how much change did Mrs Gwen receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the apples
= 2 x
n = $2
n Amount paid for the honeydews
= 3 x 3
n = $9
n Total amount paid for the fruits
= 2
n + 9
n = $11
n (b)
Amount that Mrs Gwen paid for the fruits
= 11
n = 11 x 7
= $77
Amount of change that Mrs Gwen received
= 100 - 77
= $23
Answer(s): (a) $11
n ; (b) $23