WAEC - Mathematics (1991 - No. 17)
Mrs. Kofi sold an article for C7.50 instead of C12.75. Calculate her percentage of error, correct to one decimal place.
41.2%
18.3%
5.3%
1.7%
1.4%
解释
Error =12.75 - 7.50 = 5.25
Error % = \(\frac{5.25}{12.75}\) x 100% = 41.2%
Error % = \(\frac{5.25}{12.75}\) x 100% = 41.2%