The cost price of a sweater is 10% less than that of the blazer. A profit of 30% is made when the blazer is sold for $78. What is the cost price of the sweater?
| |
Sweater |
Blazer |
| Cost price |
90% |
100% |
| Profit |
|
+ 30% |
| Selling price |
|
130% |
Cost price of the blazer in percentage = 100%
Cost price of the sweater in percentage
= 100% - 10%
= 90%
Selling price of the blazer in percentage
= 100% + 30%
= 130%
130% → 78
1% → 78 ÷ 130 = 0.60
90% → 90 x 0.60 = 54
Cost price of the sweater = $54
Answer(s): $54
