Answer: 35
Step-by-step explanation: Well percent means over 100 so we can set up an equation for this problem by reading it from left to right.
What means x, is means equals, 25% is 25/100,
of means times, and 250 means 250.
So we have the equation x = 25/100 · 40.
Simplifying on the right side of the equation,
notice that 25/100 reduces to 1/4.
So we have x = 1/4 · 40.
Think of the 40 as 40/1.
So we can cross-cancel 140 and 4 to 35 and 1
and we have x = (1)(35) over (1)(1) or x = 35.
Now let's check our answer back in the
original problem to see if it makes sense.
We have (35) is 25% of 140.
Well we know that 100% of 140 would be 140.
So 25% of 250 should be a lot less than 140.
So 35 seems to make sense as a pretty good answer.
I have shown my work in the image attached.