1 year ago

Last month the cost of using the air pump at a garage was 20p.

Mathematics

1 answer:

Schach [20]1 year ago

6 0

Answer:

Tom is incorrect

The cost of using the air pump has increased by 150%

Step-by-step explanation:

Tom is incorrect

percent change = [ (difference between initial and final value) ÷ initial value] × 100

⇒ [ (50 - 20) ÷ 20) × 100 = 150%

Therefore, the cost of using the air pump has increased by 150%

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