Directions:Study the following table carefully to answer these questions:

Percentage of Marks obtained by six students in six subjects

What are the average marks obtained by all the students in Maths ?

If a sailer sails 12 km distance within 5 hours against the flow of a river. If he sails 22 km distance in same time along the flow of the river. Then velocity of the river is _______

A work is finished by ‘A’ alone in 16 hours, ‘B’ alone in 20 hours and 'C' alone in 24 hours. They worked together and finished it and got Rs 777/ - as wages. The share of ' B ' in the wages will be _____ 

A work is done in 16 days by 8 labours. They worked together for 2 days and after that 8 additional labours joined them. The rest work will be finished by them in ______

If difference of cube and square of a number is 100 and difference of square and number is 20, then value of number is 

The sum of square of two numbers is 68 and square of the difference of them is 36. Then multiplication value of the two is. 

A tap can fill a Tank in 16 hours. Due to a hole in its base it is filled in 24 hours, If tank is full then in how many hours it will be empty through the hole. 

It was compulsory to get 36 % marks in a paper to Manoj to pass it. He got only 24 % marks and failed by 9 marks. Total marks of paper was