Question

jenny charges $9.15 an hour to babysit toddlers and $7.45 an hour to babysit school-aged children, if jenny babysat toddlers for 9 hours and school-aged children for 6 hours, how much money did she earn in all?

Answer 1

toddlers: 9.15 x 9 = 82.35

school-aged: 7.45 x 6 = 44.70

then you just add 82.35 and 44.70 which gets you a total of $127.05

Answer 2

The total money earned by Jenny is $\boxed{\bf \ \ 127.05}$.

Further explanation

Multiplication is a arithmetic operation such that two real numbers are performed in such a way that they derive a third number called product.

Procedure used:

The following steps are involved to find the value of $y\text{ unit}$ where $y$ is any real number.

1) If one unit is equal to $x$ then multiply $y$ with $x$.

2) The resultant number would be $xy$ is the value of $y\text{ unit}$.

Given:

Jenny charges $\ \ 9.15$ an hour to babysit toddlers and $\ \ 7.45$ an hour to babysit school-aged children. She babysat toddlers for $9\text{ hours}$ and school aged children for $6\text{ hours}$.

Calculation:

Step 1: Jenny earns through babysit toddlers.

If jenny charges $\ \ 9.15$ an hour to babysit toddlers and she does this job for $9\text{ hours}$.

The earning money from babysit toddlers using above procedure can be calculated as follows:

$\begin{aligned}a&=9.15\cdot 9\\&=82.35\end{aligned}$

Therefore, jenny earns $\ \ 82.35$ by babysit toddlers.

Step 2: Jenny earns through school aged children.

If jenny charges $\ \ 7.45$ an hour to babysit school aged children and she does this job for $6\text{ hours}$.

The earning money from babysit school aged children using above procedure can be calculated as follows:

$\begin{aligned}b&=7.45\cdot 6\\&=44.7\end{aligned}$  

Therefore, Jenny earns $\ \ 44.7$ by babysit school aged children.

Step 3: Total amount earn by Jenny.

The total earning is the sum of earning through babysit toddlers and babysit school aged children.

The total earning is calculated as follows:

$\begin{aligned}\text{Total money}&=82.35+44.7\\&=127.05\end{aligned}$

Thus, total money earned by jenny is $\boxed{\bf \ \ 127.05}$.

Learn more

1. Problem on the whole numbers are positive integers https://brainly.com/question/1852063.

2. Problem on the adding and simplifying the numbers https://brainly.com/question/894273.

3. Problem on the general form of the equation of the circle https://brainly.com/question/1506955.

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Multiplication

Keywords: Jenny, babysit, toddlers, school aged children, hour, multiplication, addition, total earning, real numbers, unit, sum, operation, money.