You are preparing a mixture of 47.7 litres of 10.5° Brix apple juice (specific gravity =1.038) and 115.5 litres of 5.0° Brix sucrose solution (Density = 1.020 kg/litre). What is the Brix of the mixture?
a. ( {{10.5 × 47.7 + 5.0 × 115.5}}/{{47.7 + 115.5}} )
b. ( {{10.5 × 47.7 - 5.0 × 115.5}}/{{47.7 - 115.5}} )
c. ( {{5.0 × 47.7 + 10.5 × 115.5}}/{{47.7 + 115.5}} )
d. ( {{5.0 × 47.7 - 10.5 × 115.5}}/{{47.7 - 115.5}} )