A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated by water. This process was repeated further two times. How much milk is now contained by the container?


A. 26.34 litres

B. 27.36 litres

C. 28 litres

D. 29.16 litres

A shopkeeper sold 45 kg of goods. If he sells some quantity at a loss of 3% and rest at 17%  profit, making 5% profit on the whole, find the quantity sold at profit.


A. 9 kg

B. 15 kg

C. 18 kg

D. 30 kg

A merchant sold 80 dozen oranges. He sold some at 4% loss and rest at the cost price and thus losing 3% on the whole. What is the quantity sold at loss?


A. 20 dozen

B. 40 dozen

C. 50 dozen

D. 60 dozen

The average weight  of 30 students of a class is 45 kg. The average weight of girls is 37 kg and that of boys is  49 kg. Find the number of boys in the class.


A. 10

B. 15

C. 20

D. 22 

A merchant sold 80 dozen oranges. He sold some at 4% loss and rest at the cost price and thus losing 3% on the whole. What is the quantity sold at loss?


A. 20 dozen

B. 40 dozen

C. 50 dozen

D. 60 dozen

A merchant mixes two varieties of wine containing 25% and 13% alcohol. The resultant mixture contains 17% alcohol. Find the quantity of second mixture, if 8 litre of first mixture is taken.


A. 4 litres

B. 16 litres

C. 24 litres

D. 32 litres

The average weight of 30 students of a class is 45 kg. The average weight of girls is 37 kg and that of boys is 49 kg. Find the number of boys in the class.


A. 10

B. 15

C. 20

D. 22