Question

Mr. Smith is appointed as the principal of a school. In order to keep the building safe, he appoints 2 hall monitors for every hallway, and 4 supervisors for every 20 hall monitors. Mr. Smith’s school has 30 hallways. How many supervisors does Mr. Smith need to appoint?

Answer 1

2 monitors for each hallway, 30 hallways, this means there are 60 total monitors. There are 3 sets of 20 monitors, and 4 for each set, which means that there are 12 supervisors needed to be appointed.

Answer 2

12

Explanation:

Mr Smith appoints the following people:

2 hall moniters for every hallway

4 supervisors for every 20 hall monitors.

There is 30 hallways

From this information we can determine the amount of of all monitors for 30 hallways as:

`=2*30=60`

Therefore Mr Smith appoints 60 hall monitors.

We can calculate the number of supervisors per hall monitors:

[ted]=4/20=1/5[/tex]

Therefore we can determine the amount of supervisors Mr. Smith needs to appoint is:

`=(1/5)*60=12`

Mr. Smith will need to appoint 12 supervisors for 60 hall monitors.