If 2x -3(x + 2) < 5 - 2x < -x + 2, then find the value of x.

A number is greater than twice its reciprocal by 31/4. Find the number.

If xy = -18 and x2+ y2= 85, then find the value of (x + y).

If (8 - 10x) - (13x - 2) = -9, then the value of x is

Ticket for an adult is Rs 2200 and a child is Rs 990. One child goes free with two adults. If a group has 23 adults and 11 children, what is the discount the group gets?

The area of an equilateral triangle is 9√3 sq cm, find height of the triangle?

The ratio of present ages of Ratnabali and Shaukat is 8:5. After 22 years the ratio of their ages will be 10:9. At present, what is Ratnabali's age?

Find length of the arc whose central angle is 90° and radius of the circle is 3.5 cm?