Question

Samantha bought 5 apples and an orange for $4.90. Jake bought 3 apples and 6 oranges for $6.45. Find the cost of an orange in dollars.

Answer 1

Each apple costs 0.85 and each orange costs 0.65.

Explanation:

5a+o = 4.90

3a+6o = 6.45

Multiply the first by 3 and the second by 5 and subtract the second from the first.

15a+3o = 14.70

15a+30o = 32.25

27o = 17.55

o=0.65

Plug back in the first.

5a+0.65=4.90

5a=4.25

a=0.85