Ratio & Proportion, Alligation or Mixture

Two numbers are in ratio of 21 : 26. If 8 is added in each, the new numbers are in ratio of 5 : 6. Find the ratio of numbers, if 6 subtracted from each number? 

If 25% of a number is subtracted from a second number, the second number reduces to the five-sixth. The ratio of the first number to the second number is

35% of Rifat's income is equal to 25% of Reaz's income. The ratio of their income is-

In a school there are 286 students where boys and girls are in the ratio 8:5. If 22 new girls are admitted, then new ratio of boys and girls:

If X is 2/5 of Y and Y is 5/7 of Z, what is the ratio of Z : X?

k:l = 4:3 and l:m = 5:3, then find k:l:m?

A jar contains only marbles of three colour: red, green and yellow. The red and green marbles are in the ratio of 2 : 5 and the yellow and red marbles are in ration of 5 : 6. Which of the following could be the total number of marbles?

The angels of a pentagon are in ratio 9 : 10 : 12 : 14 : 15. What is the sum of measure of the smallest and largest angels?

What is the ratio of 3/4 to the product  ?

A Water reservoir is (1/5)^th full and requires 20 liters more to make it (3/5)^th full. What is the capacity of the reservoir?

When 30% of one number is subtracted from another number, the second number reduces to its four-fifths. What is the ratio of the first to the second number?

Price of 2 pencils is less than 20% of price of a pen. What is the ratio of the price of a pen to that of a pencil?

The ratio between two numbers is 3:4 and their sum is 420. The greater one of the two numbers is-

The average daily wages of female workers in a factory is Tk. 30 and that of male workers is Tk. 42. If the average wages of all the workers is Tk. 37, what is the ratio of male to female workers?

Given that 24 carat gold is pure gold, 18 carat gold is 3/4th of pure gold and 20 carat gold is 5/6th of pure gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is

A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream. The ratio of the speed of the boat (in still water) and the stream is: 

In a certain English class, (1/4) of the number of girls is equal to (1/6) of the total number of students. What is the ratio of the number of boys to the number of girls in the class?

To fill a tank, 25 buckets of water are required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present capacity?

Find two numbers such that their mean proportional is 6 and third proportional is 20.25.

Mr. Power attends to, on the average, 12 TV service calls per day. Mr. Fixit attends to, on the average, 16 service calls per day. Mr. Power's average charge is 3/2 as much as that Mr. Fixit, who earns Tk. 7200 per month. The monthly earnings of Mr. Power, in Taka, is-