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23-07-2021
Mathematics

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The cost of an apple has decreased from $0.50 to $0.40. Work out the decrease cost of an apple as a percentage.

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23-07-2021

Answer:

Decreased by 20%

Step-by-step explanation:

0.5 x ? = 0.4

? = 0.4/0.5

? = 0.8

1 - 0.8 = 0.2

0.2 = 20%

To check, 20% of 0.5 is 0.1. 0.5 - 0.1 is 0.4. So the answer is correct.

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