Answer:
a. 25% b. 75%
Step-by-step explanation:
1. We assume, that the number 1400 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 100% equals 1400, so we can write it down as 100%=1400.
4. We know, that x% equals 350 of the output value, so we can write it down as x%=350.
5. Now we have two simple equations:
1) 100%=1400
2) x%=350
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:
100%/x%=1400/350
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 350 is what percent of 1400
100%/x%=1400/350
(100/x)*x=(1400/350)*x - we multiply both sides of the equation by x
100=4*x - we divide both sides of the equation by (4) to get x
100/4=x
25=x
x=25
