Question
55% of 220 – 15% of 40 = 20% of
?Solution
55% of 220 – 15% of 40 = 20% of ?
0.20 × ? = 0.55 × 220 – 0.15 × 40
0.20 × ? = 121 – 6
0.20 × ? = 115
? = 575
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