Ratio and Proportion

In a certain room, there are 28 women and 21 men. What is the ratio of women to the total number of people?

• 3 : 4

• 4 : 7

• 1 : 2

• 6 : 7

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In a group, the ratio of doctors to lawyers is 5 : 4. If the total number of people in the group is 72, what is the number of lawyers in the group?

• 32

• 72

• 16

• 36

In a bag, there are a certain number of toy-blocks with alphabets A, B, C and D written on them. The ratio of blocks A : B : C : D is in the ratio 4 : 7 : 3 : 1. If the number of ‘A’ blocks is 50 more than the number of ‘C’ blocks, what is the number of ‘B’ blocks?

• 500

• 700

• 350

• 210

In a mixture of 45 litres, the ratio of sugar solution to salt solution is 1 : 2. What is the amount of sugar solution to be added if the ratio has to be 2 : 1?

• 15 liters

• 30 liters

• 45 liters

• 60 liters

A certain recipe calls for 3 kg of sugar for every 6 kg of flour. If 60 kg of this sweet has to be prepared, how much sugar is required?

• 0.5 kg

• 3 kg

• 9 kg

• 20 kg

The sum of three numbers is 98. If the ratio of the first to second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is ....

• 20

• 30

• 48

• 58

If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?

• 2 :5

• 3 : 7

• 5 : 3

• 7 : 3

Tags

CCSS.7.RP.A.3

If x : y = 1 : 2, find the value of (2x + 3y) : (x + 4y)

• 4 : 7

• 9 : 11

• 8 : 9

• 7 : 3

Mother divided the money among Ron, Sam and Maria in the ratio 2 : 3 : 5. If Maria got $150, find the total amount and the money received by Ron, Maria and Sam.

• $300

• $90

• $60

• $350

The ratio of number of boys and girls is 4 : 3. If there are 18 girls in a class, find the total number of students in the class

• 18

• 16

• 24

• 42