ray bought 5 lemons and 3 limes for $7.20. Lia bought 4 lemons and 6 limes for the same price. How much would it cost to buy 1 lemon and 1 lime?

5x+3y=7.2--->-2(5x+3y)=7.2*-2--->-10x-6y=-14.4
4x+6y=7.2--->4x+6y=7.2------------>4x+6y=7.2

-6x=-7.2---->x=7.2/6 or 1.27
4(1.27)+6y=7.2---->5.08+6y=7.2----> 6y=2.12
y=.35
x=lemons  y=limes