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In a mixture of 80 litres, the ratio of milk to water is 3:1. The quantity of milk in the mixture is:
40 litres
80 litres
20 litres
60 litres
60 litres
Since the total parts are 3+1=4, just divide the total volume by 4 and multiply by the part for milk (3). 80├╖4=20, and 20├Ч3=60.
Total mixture volume = 80 litres, Ratio of milk to water = 3 : 1
Quantity┬аof┬аcomponent=Total├Ч(Total┬аPartsPartтАЛ)
Since the total parts are 3+1=4, just divide the total volume by 4 and multiply by the part for milk (3). 80├╖4=20, and 20├Ч3=60.
Students often accidentally calculate the quantity of water by using the ratio part 1 instead of 3, leading to 20 litres.
Calculate the sum of ratio parts
Given the ratio of milk to water is 3:1, the total number of parts in the mixture is 3+1=4.
3+1=4
Determine the value of one part
Divide the total mixture volume by the total number of parts to find the value of a single part.
480тАЛ=20┬аlitres
Calculate the quantity of milk
Since milk corresponds to 3 parts of the ratio, multiply the value of one part by 3.
3├Ч20=60┬аlitres
D is correct because the calculation 80├Ч3+13тАЛ yields 60 litres of milk.
This ratio method is fundamental for solving mixture, allegation, and partnership problems frequently asked in competitive exams.
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