First, we need to find how long it took Jimmy to finish the test.

Subtract the hours, then subtract the minutes.

$\displaystyle 12-11=1 \text{ hour}$

$\displaystyle 29-3=26 \text{ minutes}$

Now, the question asks how many MINUTES it takes Jimmy to finish the test. Convert the hour into minutes.

$\displaystyle 1 \text{ hour}=60 \text{ minutes}$

$\displaystyle 60+26=86$

To add time, you add the hours together, then you add the minutes together.

$\displaystyle \text{Hours}=8+1=9$

$\displaystyle \text{Minutes}=45+24=69$

Because there are only 60 minutes in an hour, you cannot have a time whose minute value is greater than 60. In this case, subtract 60 minutes and add 1 more to the hour.

$\displaystyle \text{Hours} = 9+1=10$

$\displaystyle \text{Minutes}: 69-60 = 9$

First, we need to convert $\displaystyle 73$ minutes into the combination of hours and minutes. One hour is equal to $\displaystyle 60$ minutes therefore, we can rewrite $\displaystyle 73$ minutes as the following:

$\displaystyle 73 \text{ min}=60\text{ min}+13\text{ min}$

and because

$\displaystyle 60 \text{ min}= 1\text{ hour}$

$\displaystyle 73 \text{ min}= 1\text{ hour} + 13 \text{ min}$

Now we need to add $\displaystyle 1:13$ to $\displaystyle 2:30$. 

$\displaystyle 2:30 +1:13=3:43$.

Thus you wake up from your nap at $\displaystyle 3:43$.

The first step in this process is to add two hours and fourteen minutes to $\displaystyle 2:31$pm.  Simply add them together, hours first, and then minutes:

Hours $\displaystyle 2 + 2 = 4$

Minutes: $\displaystyle 31 + 14 = 45$

So we know now that Andrew made it to his office at $\displaystyle 4:45$pm.  Add your final eight minutes to complete the problem:

$\displaystyle 45 + 8 = 53$.

The hour has not changed, so we know that Andrew arrived at his desk at $\displaystyle 4:53$pm.  

To subtract time, subtract the minutes then subtract the hours.

$\displaystyle \text{Hours}: 5-3=2$

$\displaystyle \text{Minutes: }17-34=-17$

Since we can't have negative minutes, add 60 to the minutes and subtract 1 from the hours (60 minutes = 1 hour).

$\displaystyle \text{Hours}: 2-1=1$

$\displaystyle \text{Minutes: }-17+60=43$

First, start by adding up the total amount of time Nate spent on doing his homework.

$\displaystyle 45+23+47+33=147$

Now, subtract $\displaystyle 60$ minutes until the number of minutes is less than $\displaystyle 60$ to figure out how many hours and minutes it took him to do his homework.

$\displaystyle 147-60=87$

$\displaystyle 87-60=27$

Because we subtracted $\displaystyle 60$ twice, we know that he has done $\displaystyle 2$ hours and $\displaystyle 27$ minutes worth of homework.

To figure out when he finished doing his homework, add the hours together then add the minutes together.

$\displaystyle \text{Hours}:3+2=5$

$\displaystyle \test{Minutes}:0+27=27$

So then he finished at $\displaystyle 5:27pm$

Add up all the individual items.

Billy had $\displaystyle \$20.00$. After buying the toy he had $\displaystyle \$10.51$ left over:

 $\displaystyle (20-9.49=10.51)$.

After buying the candy bar he then had $\displaystyle \$9.26$ left for his piggy bank,

 $\displaystyle (10.51-1.25=9.26)$.

In order to solve this problem, you must add all of the costs of school supplies together. This can be done through the following equation: 

$\displaystyle 23.45+1.35+2.34+0.60 = 27.74$

Therefore, the total amount that John spent on school supplies is $\displaystyle \$27.74$. 

You must subtract the cost of the two purchases from the overall paycheck amount.

Begin by subtracting the shoe purchase from the total paycheck amount:

$\displaystyle \$245.74-\$61.39 = \$184.35$

Then, subtract the cost of the dress: 

$\displaystyle \$184.35-\$15.29 = \$169.06$

$\displaystyle \$169.06$ is the amount of money Jenny has left from her paycheck on Monday.