Adeeb bought 5 oranges and 15 apples from the farmer's market. The equation 5r+15a=10.5 represents the amount of money he spent. Faye bought 12 oranges and 11 apples, represented by the equation 12r+11a=11.45 . What was the cost of each apple
Adeeb bought; amount of oranges - 5 amount of apples = 15 the equation for the amount he spent 5r + 15a = 10.5
Faye bought oranges - 12 apples - 11 the equation for the amount he spent 12r + 11a = 11.45 set of simultaneous equation 5r + 15a = 10.5 ---> 1) 12r + 11a = 11.45 ---> 2) divide by the first equation by 5 r + 3a = 2.1--> 3) Multiply third by 12 12r + 36a = 25.2 ---> 4) subtract 2nd equation from the 4th 25a = 13.75 a = 0.55 substituting a = 0.55 in 3rd equation r + 3*0.55 = 2.1 r = 2.1 - 1.65 r = 0.45 price of an orange = 0.45 price of an apple = 0.55
