A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red or all green marbles. What is the greatest number of marbles he can put in each packet?
A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?
A wheel rotates 10 times per minute and moves 20 feet during each rotation. How many feet does the wheel move in 1 hour?
The water in a fish tank measuring 114 feet by 8 inches is 7 inches high. The water is poured into another tank measuring 14 inches by 20 inches. What will be the height of water, in inches, in the second tank?
If 11410 and y≤7, which of the following must be true?
A car travels 180 km from A to B at 60 kilometers per hour and returns from B to A along the same route at 90 kilometers per hour. The average speed, in kilometers per hour, for the round trip is :
A petrol tank that is 1/2 full has 8 gallons petrol removed. The tank is then 1/10 full. What is the capacity, in gallons, of the tank?
If x : y = 2 : 3, and m : n= 9 : 4, find the ratio xn : ym.
The elevator in an eleven-storied office building travels at the rate of one floor per 1/4 minute, which allows time for picking up and letting down passengers. At the main floor and at the top floor the operator stops for 1 minute. How many complete (with return) trips will the operator makes during a 7-hour period?
Out of the 30,000 tickets for the cricket tournament in Dhaka, 1/4 were sold at Tk. 300, 1/3 were sold at Tk. 250 and the rest were sold for Tk. 125. How many tickets were sold at Tk. 125?
If x = 2y = 3z = 36 then the arithmetic mean of x, y, z is :
If y = (3x-6)/x, for what values of x, will be positive?
Half of the students of a school play football and one third of the rest play cricket. The remaining 300 students do not play either of the games. How many students are there in the school?
The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women?
One thousand shares of Luis Inc. Were purchased at Tk. 8.75 per share. The share price rose 215% in the first year after purchase, dropped 40% in the second year, and then dropped another 20% in the third year. What is the price per share at the end of the third year?
A bonus of Tk. 25,000 will be distributed among three salespersons in proportion of the amounts by which their sales exceed the basic quota of Tk. 200,000. Mrs. Asha sold Tk. 600,000. Mr. Bashir sold Tk. 450,000, and Mr. Saif sold Tk. 300,000. How much did Mr. Saif receive from this bonus?
Shahin has purchased a square sheet of plywood of 169 square feet area. To cover a wall he must cut off two feet from a side. What is the area, in square feet, of the wall?
Two third of the faculty members of a department are female. Twelve of the male faculty members are unmarried, while 60% of them are married. The total number of faculty members in the department is :
A farmer has two rectangular fields. The larger has twice the length and four times the width of the smaller field. If the smaller field has area k, then the area of the larger field is greater than the area of the smaller field by what amount?