How do you get the answer for 820 decreased by 25%

So in this one, we are DECREASING by 25%, so we say 25% of 820...

25% × 820 =
.25 × 820 = 205

Now since we are decreasing by 25%, we take our answer and subtract it from the original amount, 820.

820 - 205 = 615

820 decreased by 25% is
615.

Define x:

Let the number of hours be x.


Construct inequality:

37 + 6.7x < 97.30


Solve x:

37 + 6.7x < 97.30


Take away 37 from both sides:

6.7x < 60.30


Divide by 6.7 through:

x < 9 hours

If the club wants to spend less than $97.30, they need to rent the place for less than 9 hours. A possible amount of time will be 8 hours.