Jane bought 4 kg of durians at $
k per kg and 2 kg of mangosteens at $2
k per kg.
- Find the amount that she paid for the fruits in terms of k.
- If k = 5, how much change did Mrs Jane receive if she paid the fruit seller with a $50 note?
(a)
Amount paid for the durians
= 4 x
k = $4
k Amount paid for the mangosteens
= 2 x 2
k = $4
k Total amount paid for the fruits
= 4
k + 4
k = $8
k (b)
Amount that Mrs Jane paid for the fruits
= 8
k = 8 x 5
= $40
Amount of change that Mrs Jane received
= 50 - 40
= $10
Answer(s): (a) $8
k ; (b) $10