Question

3. In a mixture of milk and water, the proportion of water by weight is 75%. If in the 60 g mixture, 15 g of we
is added, what would be the percentage of water?
4.One litre of water is evaporated from a 6 litre solution containing 4% sugar. Find the percentage of sugar
the remaining solution.
5.State Electricity Board gives 15% discount on electricity bills, if it is paid before due date. A person gets
as discount. What was the actual amount of the bill?​

Answer 1

Step-by-step explanation:

Water in 60 gm mixture=60 x 75/100 = 45 gm. and Milk = 15 gm.

After adding 15 gm. of water in mixture, total water = 45 + 15 = 60 gm and weight of a mixture = 60 + 15 = 75 gm.

So % of water = 100 x 60/75 = 80%.