Question

12.

School guidelines require that there must be at least 2 chaperones for every 25 students going on a school trip. How many chaperones must there be for 53 students?

2 chaperones

27 chaperones

5 chaperones

4 chaperones

Answer 1

Correct answer is 5

Explanation:

2 chaperones are needed per 25 kids, there are 53 kids so 25+25=50 so 4 chaperones there, and there is an odd number so just add 1 and you got 5:)

Answer 2

6

chaperones will be needed.

Explanation:

1 to 25 students require (at least) 2 chaperones.

26 to 50 students require (at least) 4 chaperones.

51 to 75 students require (at least) 6 chaperones.

This is an example of use of the ceiling function.

The ceiling of a value

x

(sometimes written as

⌈

x

⌉

) is defined as the smallest integer greater than or equal to

x

.

In the given example we are asked for

XXX

2

×

⌈

53

25

⌉

XXXXXXXXX

which is

6