Sarah bought 4 kg of papayas at $
z per kg and 3 kg of mangosteens at $4
z per kg.
- Find the amount that she paid for the fruits in terms of z.
- If z = 5, how much change did Mrs Sarah receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the papayas
= 4 x
z = $4
z Amount paid for the mangosteens
= 3 x 4
z = $12
z Total amount paid for the fruits
= 4
z + 12
z = $16
z (b)
Amount that Mrs Sarah paid for the fruits
= 16
z = 16 x 5
= $80
Amount of change that Mrs Sarah received
= 100 - 80
= $20
Answer(s): (a) $16
z ; (b) $20