A corner shop is running a loyalty promotion for regular customers. Farid buys 4 cartons of juice at \(\pounds 1.35\) each and a loaf of bread at \(\pounds ...
Question 1 Report
A corner shop is running a loyalty promotion for regular customers. Farid buys 4 cartons of juice at \(\pounds 1.35\) each and a loaf of bread at \(\pounds 1.20\), and the shopkeeper then takes 10% off the combined total because Farid holds a loyalty card.
- Find the value of \(\displaystyle(4 \times 1.35 + 1.20) \times 0.9\) on your calculator. (2)
- Write down the amount Farid pays, correct to the nearest penny. (1)
Answer Details
This question tests entering a multi-step calculation into a calculator in the correct order, applying a percentage discount to a combined total.
(a) Work out the cost of the juice, add the bread, then multiply by 0.9 to apply the 10% discount, since taking off 10% leaves 90% of the total:
\[4\times 1.35+1.20=5.40+1.20=6.60\] \[6.60\times 0.9=5.94 \text{ <b>[2]</b>}\](b) This is already an exact number of pence, so Farid pays \(\pounds 5.94\). [1]
Multiplying the pre-discount total by 0.9, rather than working out 10% separately and subtracting it, combines both steps into one calculator entry and is less likely to introduce an arithmetic slip.
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