I need help with this algebra question i think the answer is 10 and a half hours but im not sure please help me! :D thanks! :D James can clean a large tank at an aquarium in about 6 hours. When James and lisa work together they can clean the tank in about 3 .5 hours about how long would it take lisa to clean the tank if she works alone?

Question

anonymous · Answer

Im pretty sure you right but not 100% sure I would check with someone. Just to make sure! :)

chosenmatt · Answer

@WolfMaster  @CausticSyndicalist

anonymous · Answer

thanks :D

anonymous · Answer

Subtract 6 - 3.5 I think...

anonymous · Answer

No, It's wrong I think.

anonymous · Answer

I think It's 6 - 3.5 x 2? Idk...

anonymous · Answer

that makes it 5 hours do you think thats right?

anonymous · Answer

Isn't the answer 6 cause James takes 6 hours and when they work together its 3.5 so wouldn't she take 6? hey @aswemayknow  is there any answer choices?

anonymous · Answer

If she took 6 hours, then if they both worked, it would be 3 hours...

anonymous · Answer

oh okay i haven't done this kind of math in a while

anonymous · Answer

no @Chop-GTA5  i wish so :(

anonymous · Answer

Yeah, that would have been alot easier

anonymous · Answer

@iGreen can you help

anonymous · Answer

im confused on how to do this problem

anonymous · Answer

Do you have choices?

anonymous · Answer

no :(

anonymous · Answer

i just need to find out how many hours it would take lisa to clean the tank by her self.hm.....

igreen · Answer

How did you get 10 and a half hours?

igreen · Answer

@aswemayknow

igreen · Answer

I think it's 7 because:

It takes 3.5 hours for two people to do it..but if you have one person it's going to be double the time.

3.5 * 2 = 7 hours.

But I'm not sure about my answer.

anonymous · Answer

i tool the 6 hours and divided it by the 3.5 and got 1.75 then i multiplied it by 6 and got 10 and a half

anonymous · Answer

your answer sounds good to me thanks :D  why i didn't think of that oh boy am i stressed haha

igreen · Answer

I don't think that's right..because it only took James to clean it in 6 hours..so shouldn't Lisa's time be close to his..? But I think James' time is supposed to help in a different way..but I didn't use it..I'm confused.

igreen · Answer

Lol

igreen · Answer

Welcome to Open Study!

You can give medals by clicking 'Best Response'. @aswemayknow

anonymous · Answer

ok thanks :D:D

anonymous · Answer

Begging for medals again? @iGreen

anonymous · Answer

I'm sure the most important thing to learn on OS is to give medals, right?