Strawberries cost $2.50 a pound and kiwi cost $4.50 a pound. Marcy buys a total of ten pounds of strawberries and kiwis for $30. How many pounds of kiwi did she buy?

Answer 1

2.5s + 4.5k = 30

s +k = 10

multiply 2nd equation by 2.5 then subtract that from 1st equation

2k = 5

k = 2 1/2 lbs that she bought of kiwi