Final answer:
To find the cost of 3 kg for both small and medium bags, multiply the given price per kg by 3 for each bag type. The calculated costs for each option are listed accordingly.
Step-by-step explanation:
To calculate the cost of 3 kg for small and medium bags, you would multiply the cost per kilogram for each type of bag by 3.
- a) Small bag: £0.72/kg, so 3 kg costs 3 * £0.72 = £2.16. Medium bag: £1.10/kg, so 3 kg costs 3 * £1.10 = £3.30.
- b) Small bag: £0.60/kg, so 3 kg costs 3 * £0.60 = £1.80. Medium bag: £1.10/kg, so 3 kg costs 3 * £1.10 = £3.30.
- c) Small bag: £0.72/kg, so 3 kg costs 3 * £0.72 = £2.16. Medium bag: £1.00/kg, so 3 kg costs 3 * £1.00 = £3.00.
- d) Small bag: £0.60/kg, so 3 kg costs 3 * £0.60 = £1.80. Medium bag: £1.00/kg, so 3 kg costs 3 * £1.00 = £3.00.