Patty pays $5 for the first pound and $.50 for each additional ounce. If Patty pays $8.50 in total, how many additional ounces did she buy?

Question

write a legend

then write the equation and solve

Answer 1

Remember that one pound is 16 ounces. If she buys x additional pounds, then the total cost would be:

 

5 + .50x = 8.50

 

Solve for x:

 

.50 x = 3.50

 

x = 3.50/.50 = 7 ounces.