According to a survey of business firms in a certain city, 750 firms offer their employees health insurance , 640 offer dental insurance and 280 offer health insurance and dental insurance. How many firms offer their employees health insurance or dental

What is the width of a rectangular field, whose length is 70 feet more than its width and the perimeter is 500...

A father is 32 years older than the son. In 7 years the father's age will be 5 years more than twice that of t...

The price elasticity is -0.71 means

If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will b...

The compound interest on TK. 10,000 for 4 years @ 5% per annum will be approximately

In a new production process, the number of units produced during the first week was 450. If the efficiency gra...