Question: The proportion of wine and water in 3 samples is 1 : 2, 2 : 3 and 3 : 5. A mixture comprising of equal quantities of all 3 samples is made. The proportion of wine and water in the mixture is:
Explanation:
Proportion of wine in 3 samples is 1 3 , 2 5 , 3 8
Proportion of water in 3 samples is 2 3 , 3 5 , 5 8
Since equal quantities are taken, let 1 liter of each is mixed.
Total quantity of wine is 1 3 + 2 5 + 3 8 = 133 120
Total quantity of water is 2 3 + 3 5 + 5 8 = 227 120
∴ Proportion of wine and water in the solution is = 133 : 227.
Alternately,
Proportion of wine in 3 samples is 1 3 , 2 5 , 3 8
Proportion of water in 3 samples is 2 3 , 3 5 , 5 8
Since equal quantities are taken, let 120 liter of each is mixed. (We’ve chosen 120 liters since it is divisible by the denominators of all the fractions i.e. LCM(3, 5 and 8) = 120)
Total quantity of wine is 1 3 × 120 + 2 5 × 120 + 3 8 × 120 = 40 + 48 + 45 = 133.
Total quantity of water is 2 3 × 120 + 3 5 × 120 + 5 8 × 120 = 80 + 72 + 75 = 227.
∴ Proportion of wine and water in the solution is = 133 : 227.
Hence, option (d).