The cost of manufacturing x water pumps is Tk.9000+400x. The amount received by selling these x water pumps is Tk. 500x. What is the least number of water pumps that must be manufactured and sold so that that the amount recieved is at least equal to the manufacturing cost ?

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...

Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 gra...

One of a circular pie has been served. If the rest of the pie is divided into n equal servings, then each of t...