If 2 apples were sold for 7¢, how much would be the cost of 1 1/2 dozen of apples?

Question

Solve for the cost of 1 1/2 dozen of apples if 2 apples were sold for 7¢.

Answer 1

There're two ways to solve this problem. 

1. see how many pairs of apples are there in 1 1/2 dozen of apples. (12* 1 1/2= 18, 18/2=9)

    so there are 9 pairs of apples and each pair costs 7¢, total would be 9*7 = 63 ¢ 

2. 2 apples were sold for 7 ¢, each apple worth (7/2=)3.5 ¢

   there are 18 apples in a a/2 dozen of apples (12* 1 1/2= 18), 

   18 of 3.5 ¢' apples total cost 18*3.5 = 63 ¢

 

so the cost will be 63 ¢

Answer 2

If 2 apples are 7 cents, then cost per apple is 7/2 = 3.5 cents per apple.

 

1 1/2 dozen is 18 apples

 

18(3.5)  = 63 cents