Question

The total capacity of 6 jugs and 12 glasses is 21 litres. The capacity of the jug is 5 times that of a glass. Find the capacity of each glass. Give your answer in litres

Answer 1

x-jugs
y-glasses

6x+12y=21l
x=5y

6(5y)+12y=21l
x=5y

30y+12y=21l
x=5y

42y=21l
x=5y


1l=2y
x=5y

x=12,5 l
y=2,5 l