Question

Solve this 3 mark question

Answer 1

If he pays with a £5 note and gets 30p change, that means the total cost was £4.70

All the items prices have to add up to £4.70

£1.18 + 94p = £2.12 so the two jars of jam together must cost £2.58 (£4.70 - £2.12).

If two jars cost £2.58 then one jar must cost half of that: £1.29

One jar = £1.29

Answer 2

Cost of one strawberry jam is £1. 29

Explanation:

• Step 1: Convert all costs to pence and calculate total amount due.

Cost of 1 loaf of bread = £1. 18 = 118 p

Cost of 1 tub of spread = 94p

Total paid = £5 = 500 p

Change received = 30 p

⇒ Total amount = 500 - 30 = 470 p

• Step 2: Calculate cost of one jar of strawberry jam. Let the cost be x.

470 = 118 + 94 + 2x

2x = 470 - 212 = 258

x = 258/2 = 129p

∴ Cost of one strawberry jam is £1.29