151k views
4 votes
40% of what number is 122

1 Answer

4 votes
To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 122 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 122 is 100%, so we can write it down as 122=100%.
4. We know, that x is 40% of the output value, so we can write it down as x=40%.
5. Now we have two simple equations:
1) 122=100%
2) x=40%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
122/x=100%/40%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 40% of 122

122/x=100/40
(122/x)*x=(100/40)*x - we multiply both sides of the equation by x
122=2.5*x - we divide both sides of the equation by (2.5) to get x
122/2.5=x
48.8=x
x=48.8

now we have:
40% of 122=48.8
User Ambkrish
by
9.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories