Question

Rahul spends $Rs$. $y$ daily and saves $Rs$. $z$ per week. What is his income for three weeks.

Answer 1

Algebraic Expression :- It is made up of variables and constants by performing operations like addition subtraction, multiplication and division

Income :- Income is equal to the sum of Savings and expenditure

Rahul spends $Rs$. $y$ daily

In three weeks days are $21$

Rupees spend by Rahul spends in three weeks $=21\times y$

He saves $z$ $Rs$. per week

In three weeks he saves $3z$

Income $=$ $\left(21y\right)+3z$ for three weeks

Hence, $\left(21y\right)+3z$ is the income of three weeks