At a shop, packets of cookies are sold only in boxes of 4. The cost of each box is $5.90. The mass of each packet of cookies is 2.5 kg.
- What is the total mass of 7 such packets of cookies?
- How much would 16 such packets of cookies cost?
(a)
Mass of 1 packet of cookies = 2.5 kg
Mass of 7 packets of cookies
= 7 x 2.5
= 17.5 kg
(b)
Cost of 4 packets of cookies = $5.90
Number of sets of 4 packets in 16 packets of cookies
= 16 ÷ 4
= 4
Cost of 16 packets of cookies
= 4 x 5.90
= $23.60
Answer(s): (a) 17.5 kg; (b) $23.60