Question
Anna bought 3 kg of pineapples at $r per kg and 5 kg of apples at $2r per kg.
  1. Find the amount that she paid for the fruits in terms of r.
  2. If r = 7, how much change did Mrs Anna receive if she paid the fruit seller with a $100 note?
3 m
(a)

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(b)

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Anna bought 3 kg of pineapples at $r per kg and 5 kg of apples at $2r per kg.
  1. Find the amount that she paid for the fruits in terms of r.
  2. If r = 7, how much change did Mrs Anna receive if she paid the fruit seller with a $100 note?