There are two numbers such that the first number is four times of the second mumber. If their average is 65, then what is the second number?

On subtracting 10 from a number, that number is decreased by 20%, then what is 60% of that number?

A is 80% more than B and C is $$48{4\over 7}\%$$ less than the sum of A and B. By what percent is C less than A?

Answer the following questions

A, B and C gets a total wage of Rs.3600 if they work together. A and B gets a total wage of Rs. 2800 if they work together and A alone gets Rs.1600. Find the efficiency ratio of A, B and C  

Direction : What should come in place of the question (?) in the following question.

$$ {\sqrt{441}}+ {(71)^{2}} -{(?)^{2}}=2707 $$

The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 grams. Find the weight of the teacher (in kg.) 

Direction: What value will come in place of the question mark (?) in the following question?

14, 15, 31, 94, 377, ?

Direction : The table given below represents number of bikes of five different brands sold from 2001- 2005, with the help of data given in the table, answer the following questions.

What is the ratio of average sales of TVS in year 2002 and 2005 to the average sales of Honda in year 2001 and 2004?