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25 August, 00:33

Barbara buys

3 boxes of eggs costing £1.20 each

1 jar of mayonnaise costing £1.80

2 loaves of bread

She pays with a £10 note and gets £1.60 change.

Barbara works out the cost of 1 loaf of bread as £1.40

Is she correct?

You must show your working.

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Answers (1)
  1. 25 August, 00:43
    0
    Actually, a loaf of bread costs 1.5. Barbara was wrong but only by 10 pence

    Step-by-step explanation:

    1 box of eggs = 1.2

    3 boxes of eggs = 3*1.2=3.6

    1 jar of mayonnaise = 1.8

    2 loves of bread=2x

    Total price of her purchases = 10-1.6=8.4

    Setting up the equation:

    3.6+1.8+2x=8.4

    Solving for x

    2x=8.4-3.6-1.8

    2x=3

    x=3/2=1.5
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