.30x + .25y = 5.10

Question

Vanessa bought 19 apples of 2 different types to make a pie. The total cost of the apples was $5.10. Granny Smith apples cost .25 and Gala apples cost .30 each. How many of each type of apple did Vanessa buy?

Answer 1

x=gala

y=granny

0.30x+0.25y=5.10 (1)

x+y=19 (2)

from (2):

y=19-x

0.30x+25(19-x)=5.10

0.30x + 4.47-.25x=5.10

0.30x-.25x=5.10-4.75

-0.5x= .35

x+35/5

x=7

19-7=12.

y=12