Xandra bought 4 kg of pineapples at $
x per kg and 3 kg of kiwis at $3
x per kg.
- Find the amount that she paid for the fruits in terms of x.
- If x = 7, how much change did Mrs Xandra receive if she paid the fruit seller with a $100 note?
(a)
Amount paid for the pineapples
= 4 x
x = $4
x Amount paid for the kiwis
= 3 x 3
x = $9
x Total amount paid for the fruits
= 4
x + 9
x = $13
x (b)
Amount that Mrs Xandra paid for the fruits
= 13
x = 13 x 7
= $91
Amount of change that Mrs Xandra received
= 100 - 91
= $9
Answer(s): (a) $13
x ; (b) $9