Question

40 litres of a mixture of milk and water
contains 10% of water.: How much water
must be added to make the water 20% in
the new mixture?
(A) 41
(B) 31
(C) 51
(D) 71​

Answer 1

Answer:

40/10=x/20 cross multiply

then,800=10x

then,x=800/10

then,x=80

hence, 80% water must be added.