Julie bought 3 kg of apples at $
r per kg and 4 kg of tomatoes at $2
r per kg.
- Find the amount that she paid for the fruits in terms of r.
- If r = 5, how much change did Mrs Julie 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 tomatoes
= 4 x 2
r = $8
r Total amount paid for the fruits
= 3
r + 8
r = $11
r (b)
Amount that Mrs Julie paid for the fruits
= 11
r = 11 x 5
= $55
Amount of change that Mrs Julie received
= 100 - 55
= $45
Answer(s): (a) $11
r ; (b) $45