What is the sum of two consecutive even numbers, the difference of whose square is 84? 

Evaluate: $$ {9।3-5।-5।-5।4।÷10\over-3(5)-2×4÷2}$$

S is 20% more than T. T is 10% less than U. What is the ratio of S to ?

A man purchased a bedsheet for₹ 450 and sold it at a gain of 10% calculated on the selling price. The selling price of the bedsheet was 

Directions: The bar graph, given here, shows the number of tickets sold by 6 students A, B, C, D, E and F during a fair. 

Total number of tickets sold by D, E and F is 

Two men start walking together to a certain destination, one at 6 km/hr and other at 7.5 km/hr. The later arrives an hour before the former. The distance is ?

A dealer marks an article 40% above the cost price and sells it to a customer, allowing two successive discounts of 20% and 25% on the marked price. If he suffers a loss of Rs.140, then the cost price (in Rs.) of the article is:

If (x + k ) is the common factor of x² + ax + b and x² + cx + d , then what is k equal to ?