Sam can mow a lawn in 20 min, while takes 10 min longer to mow the same lawn. How long will they take to mow the lawn if they work together?
If two planes leave the same airport at 1:00 pm, how many km apart will they at 3:00 one traverls directly at 150 km/h and the other travels directly west at 200 km/h?
A two digit number has 3 in its unit digit. The sum its digits is one seventh of the number itsself. What is the number?
A wholesaler sells goods to a retiler at profilt of 20%. The retailer sells to the customs ,Who pays 80% more than the cost of the wholesaler . What is the relater's profit?
If an integer y is subtracted from an integer x, and the result is grater than x, then y must be.
A train went 300 km from City to city at an average speed of 100 km/h. At what speed did it travel on the way back if/his its average speed for the whole trip was 120 km/h
Of two groups of tourists, each has 60 people/. If threee fourth (i.e 75%) of the first group and two third of the second group board buses to travel to a museum. How many more people of the first group board buses than that of the second group?
Six consecutive whole numbers are given. The sum of the first three numbers is 27 What is the sum of the last three numbers?3
If the length of each of the sides of three square garden's plots is increased by 50 percent, by what percent is the sum the areas of the three plots increased?
A car goes 15 km on a gallon of octane. When it is 50 km/h. When the car is driven at 60 km/h, it only goes 80% as far. How many gallons of octans are needed to travel 200 km it half the distance is traveled at 50 km/h and the rest 60 km/h ?
A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product B costs 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?
A trader marked the price of a article 30% above the cost price and gave the buyes 10& discount on market price, thereby gaining Tk. 340. The cost of the article is?
The length and breadth of a square of a are increased by 40% and 30% receptively. The area of the resulting rectangle exceeds the are of the square by?
Threee boys have marbles in the ratio of 19:5:3. If the boy with the least number has 9 marbles, how many marbles does the boy with the highest number have?
A circular wheel 28 inches in diameter rotates the same number of inches per second as a circular wheel 35 inches in diameter. If the smaller wheel makes x revolutions per second, how many revolutions per minutes does the larger wheel make in terms of x?
A, B C center into partnership with investments in the ratio of 5:7:8. If at the end of the year A's share of profit is Tk. 42360, how much is the total profilt?
One third of the faculty members of a department are female. Sixteen of the male teachers are unmarried while 60% of them are married. The total number of faculty members in the department is_____
If a, b and c are 3 consecutive integers and a>b>c, Which of the follwoing has the maximum value?
If an inspector rejects 0.8% of a product as defective, how many units of the produce? will he examined in order to rejected 2?
A, B and enter into partneship with investments in the ratio of 5 :7:8 If, at the end of the year A's share of profit is Tk. 42360, how much is the total profit ?