Answer:
1. 40 minutes
2. 20 minutes
3. 100 minutes
Explanation:
1. 100% of 40 minutes is already given to be 40 minutes
2. Let's set up an equation, where x represents the number of minutes:
50% can be written as 50/100(because any percent can be written as a fraction over 100).
Of = Multiplication
So 50% of 40 minutes would be:
50/100 · 40 = x
Solve:
50(40)/100
= 20 minutes
50% of 40 minutes is 20 minutes
Another simpler, easier way to solve this is to just know that 50% pf something means half of that total number so 40/2 = 20 minutes.
3. Let's set up this equation exactly the way the second one was formatted:
250% = 250/100
Of = Multiplication
So 250% of 40 minutes would be:
250/100 · 40 = x
250(40)/100 = x
x = 100 minutes
250% of 40 minutes is 100 minutes