At a shop, packets of cookies are sold only in boxes of 3. The cost of each box is $4.90. The mass of each packet of cookies is 1.4 kg.
- What is the total mass of 7 such packets of cookies?
- How much would 6 such packets of cookies cost?
(a)
Mass of 1 packet of cookies = 1.4 kg
Mass of 7 packets of cookies
= 7 x 1.4
= 9.8 kg
(b)
Cost of 3 packets of cookies = $4.90
Number of sets of 3 packets in 6 packets of cookies
= 6 ÷ 3
= 2
Cost of 6 packets of cookies
= 2 x 4.90
= $9.80
Answer(s): (a) 9.8 kg; (b) $9.80