- A25
- B20
- C16.67
- D22.5
Step-by-Step Solution
Price falls to 80% of its value, so for the same spend he can buy 100/80 = 1.25 times as much: an increase of %.
Answer: A) 25
Petrol becomes 20% cheaper. By what percent can a taxi owner increase his petrol use without spending any more than before?
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