Rahul can do a work in 20 days. Rahul and Shyam together do the same work in 15 days. If they are paid Rs. 400 for that then what is the share of each.

The distribution of fruit consumption in a sample of 72 seventeen – year – old girls is given in the graph below. Study the graph and answer the questions.

Distribution of Fruit Consumption

How many of these girls ate more than tow serving but less than six serving per day?

A fruit seller sold big, medium and small-sized apples for Rs.15, Rs. 10, and Rs. 5, respectively. The total number of apples sold were in the ratio 3: 2: 5. Find the average cost of an apple. 

If  $$ {cosAcotA \over( 1 - sinA ) }=x $$ then the value of x is : 

If $$ {66{2\over 3}}{ \%}$$ of 75 % of one-eighth of a certain number is 179, then $$ {33{1\over 3}}{ \%}$$ of three – fourth of that number is:

If the cost price of 28 items is equal to the selling price of 21 items, what is the profit percentage?

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

15 20 50 165 680 ? 

A shopkeeper gains 20 percent by giving a discount of 10 percent of the marked price of a toy. If he had given a discount of 20 percent, then what would be his profit percentage?