Emily bought 4 kg of papayas at $
n per kg and 3 kg of mangosteens at $2
n per kg.
- Find the amount that she paid for the fruits in terms of n.
- If n = 7, how much change did Mrs Emily receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the papayas
= 4 x
n = $4
n Amount paid for the mangosteens
= 3 x 2
n = $6
n Total amount paid for the fruits
= 4
n + 6
n = $10
n (b)
Amount that Mrs Emily paid for the fruits
= 10
n = 10 x 7
= $70
Amount of change that Mrs Emily received
= 100 - 70
= $30
Answer(s): (a) $10
n ; (b) $30