By selling a table for Rs. 350 instead of Rs. 400, loss percent increases by 5%. The cost price of table is : 

The LCM of two numbers is 495 and their HCF is 5. If the sum of the numbers is 100, then their difference is: 

Directions-Study the following diagram and answer the four questions.

The no. of students securing marks in the range 90-100

The length of the shadow of a vertical tower on level ground increases by 10 meters when the altitude of the sun changes from 45° to 30°. Then the height of the tower is 

In an election between two candidates, the winning candidate has got 70% of the votes polled and has won by 15400 votes. What is the number of votes polled for loosing candidate?

If the price of petrol be raised by 20%, then the percentage by which a car owner must Reduce his consumption so as not to increase his expenditure on petrol is 

D, E, F are the mid - points of the sides BC, CA and AB respectively of a ΔABC. Then the ratio of the areas of DEF and ΔABC is D, E, F.

If  $$  \left( x^2+{1\over x^2} \right)- \left( x - {1\over 4} \right)- 7 =0 $$ then two value of x are :