Question

you have $60 and you sister has $90.you are planning to save $8 per week and your sister is planning to save $5 pew week .How long will it take before you and your sister have the same amount of money
a)5 weeks
b)10weeks
c)11 weeks
d)16 weeks

Answer 1

please help

Answer 2

@hba

Answer 3

@bakonloverk @bart456 @casanovaxx

Answer 4

You have 60, and you will add 8, for every additional week. if n is each week you will have:
60+n*8
Likewise for the sister
90+n*5
When you have the same, you can set them equal and get the number of weeks.
60+n*8=90+n*5

Answer 5

yes i know that but how you figure out the equation can you show me @Rudy

Answer 6

@tacamry

Answer 7

please help me !!!!

Answer 8

@chevygirl

Answer 9

The easiest way to do this problem is to draw 60 and 90 side by side and add in the correct increments until the numbers match up. Which would be at b. 10 Weeks.

The second way you can do this would be to multiply the saved amount $5, or $8 by the number of the weeks and then add $60, or $90 to each amount.

Answer 10

Basically what rudy said, but way longer of a process

Answer 11

thanks

Answer 12

Do you understand the answer?

Answer 13

Are you asking how I came up with the equation or how to solve the equation?