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#38317

systems

linear equations

medium

60 sec

A store sells two types of shirts, A and B. Shirt A costs $15 and Shirt B costs $20. On Monday, the store sold a total of 10 shirts for a total revenue of $170. If $a$ represents the number of Shirt A's sold and $b$ represents the number of Shirt B's sold, how many Shirt A's were sold?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.