Answer:
Small bag: 1kg cost 200.00p
Large bag: 1kg cost £1.90
Explanation:
Small bag: A 200 g bag costs 40p
Medium bag: A 1 kg bag costs £1.80.
Large bag: A 2 kg bag costs £3.80.
Calculate the cost of 1 kg for the small and large bags.
Small bag: A 200 g bag costs 40p
200g cost 40p
1 gram cost 40/200
1 gram = 0.2 p
1000 g = 1kg
1kg cost = 0.2p × 1000
= 200.00p
Small bag: 1kg cost 200.00p
Large bag: A 2 kg bag costs £3.80.
Cost of 1kg = cost of 2kg bag / 2
= £3.80 / 2
= £1.90
Large bag: 1kg cost £1.90