Question

For every three days Rob hikes, he uses one half of a roll of film in his camera. He is planning a 24-day hike and wants to be able to take pictures each day.

How many rolls of film should Rob pack?

Answer 1

4

Explanation:

4 rolls of film

Answer 2

Rob needs 4 rolls of film

Explanation:

We need a relationship between the number of rolls of film and days hiking.

let

R = number of rolls

D = days hiking.

R = rate * D

rate = R/ D = (1/2) / 3 = 1/6

R = (1/6) * D

R = (1/6) * 24 = 4 rolls of film