What is the corrections to 8/4 + 3 = 5

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?