At what rate did Ollie's store purchase t-shirts?

At what rate did Ollie's store purchase t-shirts?

• A. 6 for $10
• B. 3 for $5
• C. 5 for $12
• D. 4 for $8

Answer: (A)

This question tests unit rate—the price per shirt when buying in bulk. For six shirts for ten dollars, the cost per shirt is ten dollars divided by six, about $1.67. The same rate comes from three shirts for five dollars: five dollars divided by three shirts is also about $1.67 per shirt. The other deals cost more per shirt—four for eight dollars is $2 per shirt, and five for twelve dollars is $2.40 per shirt. So the purchase rate is about $1.67 per shirt, as shown by six for ten dollars (and equally by three for five dollars).

This question tests unit rate—the price per shirt when buying in bulk. For six shirts for ten dollars, the cost per shirt is ten dollars divided by six, about $1.67. The same rate comes from three shirts for five dollars: five dollars divided by three shirts is also about $1.67 per shirt. The other deals cost more per shirt—four for eight dollars is $2 per shirt, and five for twelve dollars is $2.40 per shirt. So the purchase rate is about $1.67 per shirt, as shown by six for ten dollars (and equally by three for five dollars).