Streets A, B, and C are straight and level, and they intersect to form a triangle. If streets A and B intersect at a 60 degree angle and if street C is perpendicular to street B, at what acute angle do street A and C intersect?

If p, q, and r are consecutive positive integers, with p>q>r and p+q+r an even number, which of the following...

The cost of manufacturing x water pumps is Tk.9000+400x. The amount received by selling these x water pumps is...

If Tk. 6,300 was invested in a share when the price per share was Tk. 9 and additional Tk. 4200 was invested i...

When a certain number is divided by 7, the remainder is zero. If the remainder is not zero when that number is...

Zaman lives 4 k.m. due west of Parul's house. Abul lives 6 k.m. due north of parul's house and 4 k.m. due west...

Bobby, an office secretary, typed 6 letters, each of which had either 1 or 2 pages. If Bobby typed 10 pages in...