Respuesta :
Answer:
49 minutes
Step-by-step explanation:
knowing that the more people, the lower the time (divide), and the more walls, the more time (multiply)
1. find how long it takes 1 person to paint 1 wall:
63 minutes/9 walls = 7 minutes/wall with 4 people
7 minutes * 4 people = 28 minutes/wall with 1 person
2. Find for 7 people and 4 walls: 28 minutes * 7 people/4 walls = 196/4 =
49 minutes
Answer:
The correct answer is 16 minuets!
Step-by-step explanation:
You can use the formula PRT=w
(P=people) (R=rate) (T=time) (w-work)
You would start by plugging the numbers in for the given information:
(4 people)*(r)*(63min)=9walls
then solve for r
in this case r=.035714286
You can use this infromation to find what is being asked and the previously mentioned formula:
(7 people)*(.035714286)*(t) = 4 walls
Now all you have to do is solve for t to get the answer.
In this case t=16
(I also just had this question asked on an online quiz and got it correct so I know the answer is right)
Hope this helps!
