Bus A and Bus B leave the bus depot at 5 pm. Bus A takes 30 minutes to do its route and bus B takes 35 minutes to complete its route. At what time are they both back at the bus depot together? Give your answer as a 12-hour clock time.

8:30 pm

Step-by-step explanation:

step 1

Decompose the numbers in prime factors

step 2

Find the LCM

The LCM of 30 min and 35 minutes will be given as

step 3

Adds 210 minutes to the starting time

First, converting 210 minutes to hours

Remember that

will need dividing 210 by 60

therefore

5:00 pm+3.5 h=8:30 pm

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.