Sarah bought 5 kg of pineapples 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 = 6, how much change did Mrs Sarah receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the pineapples
= 5 x
k = $5
k Amount paid for the mangosteens
= 2 x 2
k = $4
k Total amount paid for the fruits
= 5
k + 4
k = $9
k (b)
Amount that Mrs Sarah paid for the fruits
= 9
k = 9 x 6
= $54
Amount of change that Mrs Sarah received
= 100 - 54
= $46
Answer(s): (a) $9
k ; (b) $46