Question

Janet earns $300 per week plus a commission of 10% on all sales that she makes. Write a formula for E, Janet’s weekly earnings, in terms of s, her sales for the week. Then solve your formula for s.   _____________________________________________________________________

Answer 1

E = 300+30s

300 because of original $300 sum

and 30s because 10% of 300 is 30

and s because each sale is multiplied by 30

so the equation is E = 300+30s

Answer 2

The formula for E is
`E=(s)/(10)+300`.

The required formula for s is
`s=10E-3000`.

Explanation:

Consider the provided information.

Janet earns $300 per week plus a commission of 10% on all sales that she makes.

Let Janet sales is represents by s and weekly earning represents by E.

The fixed amount which he earn per week is $300 and Janet earns commission of 10% on all sale.

This can be written as

`E=10\% * s+300`

`E=(10)/(100)* s+300`

`E=(s)/(10)+300`

Hence, the formula for E is
`E=(s)/(10)+300`

Now solve the formula for s as shown below:

Subtract 300 from both sides

`E-300=(s)/(10)`

Multiply both sides by 10.

`10(E-300)=10* (s)/(10)`

`s=10E-3000`

Hence, the required formula for s is
`s=10E-3000`.