To represent a family budget on a circle graph, how many degrees of the circle should be used to represent an item that is 20% of the total budget?
A boat sailing against a stream of of river takes 6 hours to travel 24 kms, while sailing with the stream it takes 4 hours to travels the same distance. What is the speed of the stream ?
A milkman purchases the milk at Tk. x per liter and sells it at Tk. 2x per liter still he mixes 2 liters water with every 6 liters of pure milk. what is the profit percentage?
A man could buy a certain number of notebooks for Tk. 300. If each notebook cost is Tk. 5 more, he could have bought 10 notebook less for the same amount .Find the price of each notebook ?
4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days . In how many will 10 women complete it?
Two -fifth of one -fourth of three seventh of a number is 15. what is the half of the number ?
Length of a train is 170 meters and speed of train is 63 km / hr . This train can pass a bridge in 30 seconds , then find the length of the bridge.
A cylindrical rod of iron, whose height is equal to its radius ,is melted and cast into spherical balls whose radius is half the radius of the rod. find the number of balls.
Rahim borrowed Tk. 800 at 6% per annum and karim borrowed tk. 600 at 10% per annum .After how much time, will they both have equal debts?
The average of 6 numbers is 25. If 3 more numbers, with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?
The product of two positive numbers is p. If each of the numbers is increased by 2, the new product is how much grater than twice the sum of the two original numbers?
If a>b>1 , then which of the following is true?
A and B together can do a piece of work in 40 days. A having worked for 20 days, B finishes the remaining work alone in 60 days shall B finish the whole work alone?
A jar contains white, red and green marbles in the ratios 2 : 3 : 5 six more green marbles are added to the jars and then the ratio becomes 2 : 3: 7 Hoe may white marbles are there in the jar?
The length of a rectangular plot is 3 folds its width . Half the area of the plot is covered by a playground whose area is 363 square meter . What is the length of the plot?
A box contains 10 electric bulbs from which 2 bulbs are defective . Two bulbs are chosen at random. What is the probability that one of them is defective?
Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours. C is closed and A and B can fill the remaining part in 6 hours. The number of hours taken by C alone to fill the tank is:
If x= 7 - 43 then find the value of (x+1x) ?
An employer pays 3 workers X, Y and Z a total of Tk. 36600 a week. X is paid 125% of the amount Y is paid and 80% of the amount Z is paid . How much does X make a week?
The volume of a rectangular solid is to be increased by 50% without altering its base. To what extent the height of the solid must be changed.
৪৬. If (89)2 is added to the square of a number, the answer so obtained is 16292. what is the 126 of that number?
In a container , there are 2 green marbles and 2 red marbles . You randomly pick the marbles. What is the probability that both of the are green?
A water tank has two taps (Tap1 -Tap2) . Tap -1 can fill a tank in 8 hours and Tap- 2 can empty the tank in 16 hours. How long will they take to fill the tank if both taps are opened simultaneously but tap-2 is closed after 8 hours?