Discount & markup chainmediumFree question

A £176 item is reduced 10%, then a further 10% off the new price. What is the final price?

A£158.40
B£140.80
C£156.00
D£174.24
E£142.56
Worked solution

Apply each step as a multiplier in sequence (× (1 + markup), then × (1 − discount)); they don't net off additively. The correct answer is £142.56. Traps to avoid: £158.40 comes from the "one discount only" error; £140.80 comes from the "added the discounts" error; £156.00 comes from the "subtracted raw" error; £174.24 comes from the "second as increase" error.

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