+274 Four people can paint a house in six hours. How many hours would it take three people to paint the same house, assuming everyone works at the same rate?
Let the first right answer win!
+1084 8 hours:
Let's take the LCM of 4 and 3: it's 12. So, since 12 is 3 times 4, we divide (inverse proportions) by 2. So it will take 2 hours for 12 people. Now, we see that we divide by 4 to get to 3. Therefore, we multiply by 4 and get 8.
Is that correct?
:)
+274 Congratulations! You are the winner of the 1st Math Web2.0calc forum Questions Contest Hosted by Qwerty!!!
1st: ilorty with 3 points!
+36916 to paint one house requires 4 people x 6 hours = 24 people hours to paint the house
if you have only three people it will take 8 hours (to get 24 people hours)
+274 Congrats! You are in 2nd place with 2 points of the 1st Math Web2.0calc forum Questions Contest Hosted by Qwerty!
Updated leaderboard!
1st: ilorty 3 points
2nd: Electric Pavlov 2 points
