breashaeeboo8705 breashaeeboo8705
  • 04-07-2020
  • Mathematics
contestada

Elsa, Alan, and Deon have a total of $82 in their wallets. Alan has 3 times what Deon has. Deon has $7 less than Elsa. How much do they have in their wallets?

Respuesta :

adioabiola
adioabiola adioabiola
  • 06-07-2020

Answer:

Alan=$45

Deon=$15

Elsa=$22

Step-by-step explanation:

Let

Elsa=x

Deon=x-7

Alan=3(x-7)

Total=$82

x+(x-7)+3(x-7)=82

x+x-7+3x-21=82

5x-28=82

5x=82+28

5x=110

x=110/5

=22

Elsa=x=$22

Deon=x-7

=22-7

=$15

Alan=3(x-7)

=3(22-7)

=3(15)

=$45

Answer Link

Otras preguntas

Why are linked traits inconsistent with Mendel's laws?
How is a Punnett square used to determine the probability of inheriting genes ?
Joe reviews the literature and comes to believe that as one's educational level rises, so does one's income. Joe has created which of these
Consider all numbers consisting of four different digits all between 1 and 9 . How many of these are odd
why did he dig the well?​
What is a controlled test of a hypothesis called?
What steps did Russia take to boost the growth of heavy industry, particularly steel?
Suppose 6-year-old and 8-year-old children are tested at the same time and then again 2 years later at ages 8 and 10. What type of research design is this
What is the solution to the equation x+7/2=5x/3
What is the solution to the equation x+7/2=5x/3