3 A robot can complete 5 tasks in hour. Each task takes the same amount of time.
10
a. How long does it take the robot to complete one task?
b. How many tasks can the robot complete in one hour?

A. - 12 minutes

B. - 5 Tasks

Step-by-step explanation:

it takes 12 minutes for 1 task because 60 minutes divided by 5 is 12

in one hour the robot can do 5 tasks per hour

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional