# NCERT Class 8 Mathematics Solutions: Chapter 2 – Linear Equations in One Variable Exercise 2.2 Part 4 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question: 8** Three consecutive integers are such that when they are taken in increasing order and multiplied by 2,3 and 4 respectively, they add up to 74. Find these numbers.

**Answer**:

Let the three number consecutive integers be and

According to the question

Hence, first integer

Second integer and third integer

**Question: 9** The ages of Rahul and Haroon are in the ratio 5: 7. Four years later the sum of their ages will be 56 years. What are their present ages?

**Answer**:

Let the present ages of Rahul and Haroon be 5*x* years and 7*x* years respectively.

According to condition

Hence, present age of Rahul year and Present age of Haroon =

**Question: 10** The number of boys and girls in a class are in the ratio 7: 5. The number of boys is 8 more than the number of girls. What is the total class strength?

**Answer**:

Let the number of girls be .

Then, the number of boys = .

According to the question,

Hence the number of girls and number of boys