Question

Write an algebraic equation for the following problem and then solve it.
When Angela and Walker first started working for the​ supermarket, their weekly salaries totaled ​$650. Now during the last 25 years Walker has seen his weekly salary triple. Angela has seen her weekly salary become four times larger. Together their weekly salaries now total ​$2370. How much did they each make 25 years​ ago?

Answer 1

So what are we trying to find here ?

Answer 2

we're trying to find and equation so something = 2370

Answer 3

once there is an equation, i can solve it

Answer 4

Yes, we want to find the Old salaries of Angela and Walker by setting up an equation.

Answer 5

Let :

A = old salary of Angela
W = old salary of Walker

Answer 6

Sum of their old salaries was 650. Can you write an equation for this using above variables ?

Answer 7

i cant

Answer 8

That's okay. You'd find it easier once I showed you how to setup the equation.

Answer 9

We have defined A and W for their past salaries. Since we know that their old salaries add up to 650 :

A + W = 650

Answer 10

That's one equation. We need to setup another equation like that for the sum of their present salaries

Answer 11

What does their present salaries add up to ?

Answer 12

2370

Answer 13

3w+4a=2370

Answer 14

?

Answer 15

Awesome!

Answer 16

So we have two equations :

a + w = 650
3w+4a=2370

Answer 17

You should be able to solve them ?

Answer 18

i cant use a and w as the variables, it tells me to type the expression as x as the variable

Answer 19

x for Angela or Walker ?

Answer 20

so its, 3x+4x=2370

Answer 21

but that would imply they make the same

Answer 22

No, can you take a screenshot of the question and attach here ?

Answer 23

Try this :

3x + 4(650-x) = 2370

Answer 24

Try entering this :

3x + 4*(650-x) = 2370