Ratio and Proportion MCQs with Answers

Past Paper MCQ

If $A : B = 2 : 3$ and $B : C = 4 : 5$, then $A : B : C = ?$

• A.$4 : 6 : 10$
• B.$2 : 3 : 5$
• C.$8 : 10 : 15$
• D.$8 : 12 : 15$

Past Paper MCQ

Two numbers are in the ratio $3:5$. If $9$ is subtracted from each number, the ratio becomes $12:23$. The smaller number is:

• A.$27$
• B.$45$
• C.$33$
• D.$55$

Past Paper MCQ

If $2 : 7 :: x : 49$, then what is the value of $x$?

• A.$7$
• B.$21$
• C.$14$
• D.$28$

Past Paper MCQ

Which number, when increased in the ratio $7:9$, becomes $224$?

• A.$174$
• B.$196$
• C.$256$
• D.$288$

Past Paper MCQ

Find the 4th proportional to $4$, $16$, and $7$.

• A.$24$
• B.$28$
• C.$32$
• D.$21$

Past Paper MCQ

Which of the following symbols is commonly used to denote proportion?

• A.$\cong$
• B.$\sim$
• C.$\approx$
• D.$\propto$

Past Paper MCQ

In a mixture of 60 litres, the ratio of milk and water is $2:1$. If this ratio is to be changed to $1:2$, then the quantity of water to be further added is:

• A.30 litres
• B.40 litres
• C.60 litres
• D.90 litres

Past Paper MCQ

If $\frac{3a - 5b}{3a + 5b} = 5$, then $a : b$ is equal to:

• A.$5 : 3$
• B.$2 : 5$
• C.$3 : 5$
• D.$5 : 2$

Past Paper MCQ

If 15 toys cost Rs. 234, what will 35 toys cost?

• A.Rs. 526
• B.Rs. 536
• C.Rs. 556
• D.Rs. 546

Past Paper MCQ

Total number of students in a class is 95. If the total number of girls in the class is 45, then the ratio of total number of boys to total number of girls is:

• A.$5:9$
• B.$9:10$
• C.$11:9$
• D.$10:9$