What is the value of x and y in these equations 7x-2y=8 and 3x+4y=18.

A party for 50 people was organized at their own expense. 48 of them paid Rs 950 each, while the other two paid Rs 1200 more than the group's average expenditure. The total expenditure incurred was.

A number is divided into two parts in such a way that 80% of 1^st  part is 3 more than 60% of 2nd part and 80% of 2nd part is 6 more than 90 % of the 1st part . Then the number is: 

Direction: Given bar graph shows the number of plain books and lined books (in hundreds) available at three different stores and the table shows the percentage of total books (Plain + lined) that was sold by different stores.

The selling price of each plain books and lined books sold by store B is Rs. 250 and Rs. 175 respectively. Then, find the total amount earned by store B on selling these books if 60% of lined books are sold by the store? 

A money - lender, lends a part of his money at 10 % per annum and the rest at 15 % per annum. His annual income is 1,900. However, if he had interchanged rate of interest on the two sums, he would have earn 200 more. The amount lent will fatch what amount at 15 % ? 

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

Percentage of Marks obtained by six students in six subjects

What is the ratio between total marks obtained by D in Biology, Maths and English together and the total marks obtained by F in these subjects together respectively?

The average of eight successive numbers is 6.5. The average of the smallest and the greatest numbers among them will be: 

Directions : What should come in place of the question mark (?) in the following number series? 

55 109 ? 433 865 1729