Final answer:
To transport 400 people with each bus holding 60 people, you need to divide the total number of people by the bus capacity and round up to the next whole number, resulting in 7 buses needed.
Step-by-step explanation:
To determine how many buses are needed for 400 people when each bus holds 60 people, we perform a division operation. We divide the total number of people, 400, by the number of people each bus can hold, 60. This gives us:
400 ÷ 60 = 6.666...
Since you can't have a fraction of a bus, we need to round up to the next whole number because you need to accommodate all the people. Rounding up, we find that you would need 7 buses to transport 400 people. Hence, the correct answer is: a) 7 buses.
The logic is similar to operating a bus route on a set schedule; in any scenario involving transportation, the number must be rounded up to ensure everyone or everything can be transported adequately. In this case, even though 6 buses can carry 360 people (6 buses x 60 people per bus), that's not enough for the 400 people. Therefore, a seventh bus is necessary to carry the remaining 40 people.