Math Problem Statement
Doris compra 7 docenas y media de carritos a S/.9,80 cada uno. Si vende tres quintos del total a S/.12,50 cada uno y el resto a S/.13,20,¿Cuanto gano en total?
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic
Fractions
Profit Calculation
Formulas
Total items = Number of dozens × 12
Cost of purchase = Total items × Cost per item
Items sold = Fraction of total × Total items
Income from sale = Items sold × Sale price
Profit = Total income - Total cost
Theorems
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Suitable Grade Level
Grades 6-8