At a shop, packets of coffee powder are sold only in boxes of 4. The cost of each box is $12.90. The mass of each packet of coffee powder is 2.3 kg.
- What is the total mass of 9 such packets of coffee powder?
- How much would 8 such packets of coffee powder cost?
(a)
Mass of 1 packet of coffee powder = 2.3 kg
Mass of 9 packets of coffee powder
= 9 x 2.3
= 20.7 kg
(b)
Cost of 4 packets of coffee powder = $12.90
Number of sets of 4 packets in 8 packets of coffee powder
= 8 ÷ 4
= 2
Cost of 8 packets of coffee powder
= 2 x 12.90
= $25.80
Answer(s): (a) 20.7 kg; (b) $25.80