The cost, in taka, of manufacturing x microwaves is 6000+300x Taka. The amount received when selling these x microwaves is 700x taka. What is the least number of microwaves that must be manufactured and sold so that the net profit is Tk 2400 ?

The larger of two numbers exceeds twice the smaller number by 9. The sum of twice the larger and 5 times the s...

Find the probability of selecting a prime number from a set numbers 1 to 15 (both inclusive)

If the annual expenditure of family A on health is x and that of family B is y, then which of the following re...

If d=2.0453 and d* is the decimal obtained by rounding d to the nearest hundred what is the value of d*-d?

If the numbers 17/24, 1/2, 3/8, 3/4 and 9/16 were ordered greatest to least, the middle number of the resultin...

A boy was asked to multiply a number by 7/8, instead he divided the number by 7/8 and got the result 15/14 mor...