Eva bought 3 kg of apples at $
r per kg and 2 kg of honeydews at $3
r per kg.
- Find the amount that she paid for the fruits in terms of r.
- If r = 7, how much change did Mrs Eva receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the apples
= 3 x
r = $3
r Amount paid for the honeydews
= 2 x 3
r = $6
r Total amount paid for the fruits
= 3
r + 6
r = $9
r (b)
Amount that Mrs Eva paid for the fruits
= 9
r = 9 x 7
= $63
Amount of change that Mrs Eva received
= 100 - 63
= $37
Answer(s): (a) $9
r ; (b) $37