Xuan bought 4 kg of papayas at $
x per kg and 2 kg of durians at $2
x per kg.
- Find the amount that she paid for the fruits in terms of x.
- If x = 7, how much change did Mrs Xuan receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the papayas
= 4 x
x = $4
x Amount paid for the durians
= 2 x 2
x = $4
x Total amount paid for the fruits
= 4
x + 4
x = $8
x (b)
Amount that Mrs Xuan paid for the fruits
= 8
x = 8 x 7
= $56
Amount of change that Mrs Xuan received
= 100 - 56
= $44
Answer(s): (a) $8
x ; (b) $44