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WAEC - Mathematics (1988 - No. 20)

A sales girl gave a change of N1.15 to a customer instead of N1.25. Calculate her percentage error
10%
7%
8.0%
2.4%
10%

설명

Error = 1.25 - 1.15 = 0.10

0.10/1.25
* 100 = 8.0%

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