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Practice Ratio and proportion Questions and Answers

The ratio of zinc and copper in a brass pieces is 3:4. How much zinc will be there in 140 kg of such a piece?
If A varies directly as B and inversely as C and A = 6, B = 3 and C = 5, what is the value of A when B = 5 and C = 2?
If A varies directly as B and inversely as C and A = 8, B = 2 and C = 5, what is the value of A when B = 6 and C = 5?
The ratio of number of boys and girls in a factory of 660 workers is 7:5. How many more girls should be joined to make the ratio 1:1?
The ratio of number of boys and girls in a factory of 600 workers is 7:3. How many more girls should be joined to make the ratio 1:1?
What is the ratio whose terms differ by 42 and the measure of which is 3/5?
70 percent of first number is equal to 50 percent of the second number. What is the respective ratio of the first number to the second number?
90 percent of first number is equal to 50 percent of the second number. What is the respective ratio of the first number to the second number?
80 percent of first number is equal to 40 percent of the second number. What is the respective ratio of the first number to the second number?
80 percent of first number is equal to 70 percent of the second number. What is the respective ratio of the first number to the second number?
60 percent of first number is equal to 40 percent of the second number. What is the respective ratio of the first number to the second number?
70 percent of first number is equal to 40 percent of the second number. What is the respective ratio of the first number to the second number?
What is the fourth proportional to 4, 9, 16?
What is the fourth proportional to 2, 5, 12?
What is the fourth proportional to 5, 9, 25?
What is the mean proportion between 3 and 27?
What is the mean proportion between 9 and 16?
What is the mean proportion between 9 and 36?
Find the third proportional to 12 and 48?
Find the third proportional to 11 and 33?
Find the third proportional to 13 and 39?
The ratio of two numbers is 2:5. If each number is decreased by 4, the ratio becomes 3:8. Find the smaller numbers.
The ratio of two numbers is 3:5. If each number is decreased by 5, the ratio becomes 5:9. Find the smaller numbers.
The ratio of two numbers is 5:11. If each number is decreased by 2, the ratio becomes 4:9. Find the smaller numbers.
What is the fourth proportion of 18, 20 and 23?
What is the ratio whose terms differ by 30 and the measure of which is 4/9?
What is the mean proportion between 12 and 27?
Three numbers are in the ratio 3:5:6. If the sum of their squares is 630, then the numbers are:
54% of the first number is 90% of the second number. What is the ratio of the first number to the second number?
Find 'X' if the below three numbers are in proportion. 2.6, 1.3, X
What is the fourth proportional to 189, 273 and 153?
Rs 11,550 has to be divided between X, Y & Z such that X gets 4/5 of what Y gets and Y gets 2/3 of what Z gets. How much more does Z get over X (in Rs)?
Before a battle the ratio of tanks to planes in an army was 5 : 3. During the war 1000 tanks were destroyed and 800 planes were destroyed. The ratio of tan...
The ratio of the number of girls to the number of boys in a school of 720 students is 3 : 5. If 18 boys left the school, find how many new girls may be adm...
Rs 1800 was divided among A, B and C in the ratio of 11:6:13 respectively. Find the amount received by A and B together.
Rs 1080 was divided among Amit, Bhaskar and Charu in the ratio of 13:8:15 respectively. Find the amount received by Amit and Bhaskartogether.
Rs 1296 was divided among Anil, Bhanu and Charan in the ratio of 10:5:12 respectively. Find the amount received by Anil and Bhanu together.
Rs 1400 was divided among Anil, Bhanu and Charan in the ratio of 9:5:11 respectively. Find the amount received by Anil and Bhanu together.
Rs 2106 was divided among Anil, Bhanu and Charan in the ratio of 13:10:16 respectively. Find the amount received by Anil and Bhanu together.

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