In a mixture, the ratio of the milk and water is 6 : 5. when 22 liter mixture is replaced by water, the ratio becomes 9 : 13. Find the quantity of water after replacement.
A man covers a total distance of 100 km on bicycle . For the first 2 hours , the speed was 20 km / hr and for the rest of the journey , it came down to 10 km / hr. The average speed will be
A man can reach a certain place in 40 hours . If he reduces his speed by 1/15th, he goes 5 km less in that time . Find the total distance covered by him.
A shopkeeper gains 17% after allowing a discount of 10% on the marked price of an article . Find his profit percent if the article is sold at marked price allowing no discount .
Aalm sold tow vehicles for Tk. 46000 each . If he gained 10% on the first and lost 10% on another , then what is his percentage profit or loss in this transaction ?
The profit earned after selling an article for Tk. 3,362 is the same as the loss incurred after selling the article for Tk. 2,36. At what selling price will a trader make a 20% profit on this article?
An article costs Tk. 500 and the marked price is mentioned as Tk. 800. What is the profit % for the seller it he sells and offers a discount of 10% on the marked price ?
The average of the first and the second of three numbers is 15 more than the average of the second and the third of these numbers .what is the difference between the first and the third of these three numbers?
30 pens and 75 pencils altogether were purchased for Tk. 510 . If the average price of a pencil was Tk. 2 , what was the average price of a pen ?
A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .
The ratio of the speed of boat in still water to the speed of stream is 16 : 5. A boat goes 16.5 km in 45 minute upstream , find the time taken by boat to cover the distance of 17.5 km downstream .
A train passes a platform in 40 sec and a woman standing on the platform in 30 sec . the speed of the train is 108 km / hr, what is the length of the platform ?
A train 125 m long passes a person , running at 8 km / hr in the same direction in which the train is going in 25 seconds . The speed of the train is :
There are two numbers , 1 st number is 12 more than the 2nd number . The average of the two numbers is 19. If 2 is added in both numbers , find the ratio of the numbers .
Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.
A number is as much greater than 36 as is less than 86 . Find the number.
X, Y and Z can do a piece of work in 6 hours. X and Y can do the same work in 8 hours and Z can the same work in 12 hours . In how many times will X and Z do the same work?
If A can do 1 /4 of a work in 3 days and B can do 1 /6 of the same work in 4 days , how much will A get if both work together and are paid Tk. 180 in all ?
In a box there are 10 apples and 2/5th of the apples are rotten . If three apples are taken out from the box, what will be the probability that at least one apple is rotten .
If the numerator of fraction is increased by 200% and the denominator is increased by 350% . The resultant fraction is 5/12 . what was the original fraction ?