You can sort them on the shapes that are the same or different
Consider the number 38,288
Now, we have to round this number to the nearest hundreds place.
The place value to the extreme right of the number is ones, then tens, hundreds, thousands, ten thousands and so on.
So, the digit at hundreds place = 2
Consider the digit to the right of the hundred place which is '8', which is greater than 5.
Therefore, we will add '1' to the digit at hundreds place.
Therefore, the number 38,288 rounded to nearest hundreds is 38,300.
The first thing we must do for this case is to define a variable:
x: number of years
y: total salary
We have then:
For first company:
y = 1500x + 31000
For second company:
y = 2000x + 28500
Equaling both equations we have:
1500x + 31000 = 2000x + 28500
Clearing x:
2000x - 1500x = 31000 - 28500
500x = 2500
x = 2500/500
x = 5
Answer:
It will take for the salaries to be the same about:
x = 5 years
This problem can be expressed through the equation:
x+3x+10= 90
To solve it we subtract 10 on both sides
→x+3x=80
Add x and 3x
→4x=80
And divide each side by 4
→x=80/4
→x=20
ANSWER:
20
