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