Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

PLEASE HELP :'( Ian and Nadya can each wash a car and clean its interior in about 2 hours, but Chris needs 3 hours to do the work. If the three work together, how long will it take to clean 7 cars?

OpenStudy (anonymous):

Figured it out! If you calculate, it takes Nadya and Ian 1/2 a car an hour and chris cam wash 1/3 a car in an hour. 7 divided by 1 and 1/3 is 5 and 1/4, aka, 5 hours and 15 minutes. YES!

OpenStudy (anonymous):

1/2 +1/2 + 1/3 =4/3 just reverse the answer that is for one car-> 3/4. multiply with 7 for 7 cars-> 21/4 so 21/4 hr-> 5hr 15 minutes

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
GRIZZLEY19: Y'all let me know what y'all think about this beat I made I took me like a hour maybe rate it 0/10 https://drive.
11 hours ago 0 Replies 0 Medals
Ultrilliam: Welcome to the 10th Anniversary Update! (Part 2) Sorry this one passed the date a
1 hour ago 13 Replies 4 Medals
Twaylor: was walking downtown and my adhd brain wanted to make some (rock?) lyrics: There'
14 hours ago 2 Replies 0 Medals
AndreW2002: There is an error when sending GIFs, is this known or is this a level requirement
23 hours ago 10 Replies 0 Medals
serenitystXrgazer: Getting sent to anti gay christian covestion camp in a few weeks, any tips. guys i think im cooked.
2 hours ago 6 Replies 1 Medal
Aubree: Guys, what does love feel like? I've been getting a tight chest and when I talk to him my heart rate hangs out around 100-120 beats per min, and when he doe
1 day ago 10 Replies 2 Medals
thereneelg: ok... anyone have advice?? ...I did Choir all throughout Middle school and have ALWAYS been put in Soprano those three years.
3 days ago 6 Replies 1 Medal
kamariana: The Byzantine Procopius is known for (5 points) reconquering much of the old Roma
4 days ago 0 Replies 0 Medals
chuckD: hellp!!! what does it mean to describe a scientist as skeptical Why is sceptical
4 days ago 2 Replies 1 Medal
DoltonCarlee: So like do y'all know anything about the first world war?
3 days ago 2 Replies 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!