At a supermarket, packets of tea bags are sold only in boxes of 3. The cost of each box is $13.20. The mass of each packet of tea bags is 1.6 kg.
- What is the total mass of 7 such packets of tea bags?
- How much would 6 such packets of tea bags cost?
(a)
Mass of 1 packet of tea bags = 1.6 kg
Mass of 7 packets of tea bags
= 7 x 1.6
= 11.2 kg
(b)
Cost of 3 packets of tea bags = $13.20
Number of sets of 3 packets in 6 packets of tea bags
= 6 ÷ 3
= 2
Cost of 6 packets of tea bags
= 2 x 13.20
= $26.40
Answer(s): (a) 11.2 kg; (b) $26.40