A picture is copied onto a sheet of paper, which measures 8.5 inches by 10 inches. A border of 1.5 inch is left all around. What is the area , in squar inches , covered by yhe picture ?
Three pipes P,Q and R can fill a tank in 6 hours. After working all three together for 2 hours. R is closed and P and Q can fill the remaining part in 7 hours . The number of hours taken by R alone fill the thank is --
Present ages of Samad and Akmal are in the ratio of 5:4 respectively . Three years later ,the ratio of their ages will become 11:9 respectively . What is akmals present age in years ?
Two trains are moving in oppositions directions at 60 km/hr and km/hr. Their lengths are 1.10 km and 0.9 km respectively . The time taken by the slower train to cross the faster train in seconds is --
which one is true for the mathematical expression 2n+2n-12n+1-2n?
Simplify (2x-1)2 ÷x-5
If a + b = 3 and a-b=2 , what is the value of 8ab(a2+b2)?
In the following image, ASB is a quarter of a circle . PQRS is a rectangle with sides PQ= 8 and PS =6 . what is the lenght of the are AQB?
A train is travelling at 100 km per hour (Kmh) overtakes a motorbike travelling at a speed of 65 kmh in 40 seconds . What is the length of the train in meters?
How many squares of 2 inch dimension will be required to cover a rectangle of 8 inch breadth and 6 inch length ?
In a class of 78 students 41 are taking French, 22 are taking German. Of the students taking French of German, 9 are taking both courses. How many students are not enrolled in either course ?
If n is an even integer, which of the following must be an odd integer ?
If 32% of 650 is equal to 2/3 of x, what is the value of x ?
Mita has two brothers - one of the brothers is 4 years younger than her and the other brothers is 5 years older than this brother. If the average age of the siblings is 5, what is the age of Mita ?
The production cost of one unit of an item is Tk. 10. The item can be sold for a price of Tk. 16. The company further incurs a cost of Tk. 10,000 in the selling process. How many units of the product should be sold for the company to earn a profit of Tk. 50,000 ?
The angels of a triangle are in the ratio 2:3:4. What is the value of the largest angle in the triangle ?
A can do a piece of work in 10 days, B can do the same in 30 days and C in 60 days. If A is assisted on alternate days by B and C, in how many days would the work get completed?
The height of a box is 10cm, its upper and lower lids are square in shape. If the total surface area of the box is 250 cm^2, the length of its side is :
If Arif is making a profit of 25 percent on his selling price, what is his actual profit percentage?
The price of a mobile set Tk. 4200, which includes 20% profit mark up. What is the cost of the mobile set ?