The price of one eraser is Rs. 3. The value of 20 eraser is equal to the value of three Pens. The value of one pen is equal to the value of two pencils and the value of six pencils is equal to the value of five markers. What is the value of one marker?

Which smallest number must be added to 2203 so that we get a perfect square? 

Find the value of given expression.

30 – [40 – {56 – (25 – 13 – 12)}]

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

(?)² + (65)²=(160)² -  (90)² – 7191

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

140% of 450 + 24% of 650 =?

What approximate value should come in the place of question mark (?) in the following question?
 (8423 + 3120 + 6543) ÷ (1536 + 377 + 189) = ?

If 0.5x + 0.7y=0.5 and 0.7x + 0.5y=0.7,then the value of x+y is

Direction: what should come in place at question mark(?).

(0.85% of 405) +(2.25% of 550)=?