five apples and four oranges cost $11.80. one apple and six oranges cost $9.90. how much does one orange cost?

Answer 1

A = price of apple

O = cost of orange

5A + 4O = 11.80

A + 6O = 9.90

A = 9.90 - 6O

5(9.90-6O) + 4O = 11.80

49,5 - 30O + 4O = 11.80

-26O = -37.7

O = 1.45