Mathematics for IGCSE & O level - Percentages (Section 1 - No. 50)
Electrics buys washing machines for $255 and sells them for $310. What is their percentage profit?
17.5%
21.5%
25.5%
19.6%
解释
Profit = $310 - $255 = $55. Percentage profit = ($55/$255) * 100 = 21.57%