Rachel bought 2 kg of mangosteens at $
s per kg and 3 kg of durians at $4
s per kg.
- Find the amount that she paid for the fruits in terms of s.
- If s = 7, how much change did Mrs Rachel receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the mangosteens
= 2 x
s = $2
s Amount paid for the durians
= 3 x 4
s = $12
s Total amount paid for the fruits
= 2
s + 12
s = $14
s (b)
Amount that Mrs Rachel paid for the fruits
= 14
s = 14 x 7
= $98
Amount of change that Mrs Rachel received
= 100 - 98
= $2
Answer(s): (a) $14
s ; (b) $2