Emma bought 3 kg of tomatoes at $
n per kg and 4 kg of mangosteens at $3
n per kg.
- Find the amount that she paid for the fruits in terms of n.
- If n = 6, how much change did Mrs Emma receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the tomatoes
= 3 x
n = $3
n Amount paid for the mangosteens
= 4 x 3
n = $12
n Total amount paid for the fruits
= 3
n + 12
n = $15
n (b)
Amount that Mrs Emma paid for the fruits
= 15
n = 15 x 6
= $90
Amount of change that Mrs Emma received
= 100 - 90
= $10
Answer(s): (a) $15
n ; (b) $10