Question
Eva bought 3 kg of apples at $r per kg and 2 kg of honeydews at $3r 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 Eva receive if she paid the fruit seller with a $100 note?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Eva bought 3 kg of apples at $r per kg and 2 kg of honeydews at $3r 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 Eva receive if she paid the fruit seller with a $100 note?