## Artchicky Group Title It takes Maria 11 mins to weed a garden. Mike can weed the same garden in 10 minutes. How long would it take them if they work together? - I got 21 mins but i honestly don't know how to round it. one year ago one year ago

1. saifoo.khan Group Title

$\frac 1x =\frac{1}{10}+\frac{1}{11}$

2. saifoo.khan Group Title

1/10 = Mike's part. 1/11 = Maria'a part. 1/x = time it will take if both will work.

3. Artchicky Group Title

Alright and so then i would find the common denominator and then solve for the x?

4. hba Group Title

Now take the lcm,cross multiply and get to x.

5. saifoo.khan Group Title

Yes.

6. Artchicky Group Title

I got 120/110. do i divide 110 by 120 and turn it into a decimal?

7. saifoo.khan Group Title

Nope/

8. Artchicky Group Title

-.- okay so for my lcd i did 11 by 10. then okay i messed up my adding. it should be 21/110

9. saifoo.khan Group Title

1/x = 21/110

10. Artchicky Group Title

then i would multiply the 1 and that would isolate the x. leaving me with the 21/110 and then i simplify it?

11. saifoo.khan Group Title

x is in the denominator currently. Do something to bring it to the numerator.

12. Artchicky Group Title

multiply the 110 to the top and bottom. I would get 110 over 110x?

13. hba Group Title

See this, $\frac{ 1 }{ a }=\frac{ 11 }{ 10 }$ $a=\frac{ 10 }{ 11 }$

14. saifoo.khan Group Title

|dw:1358612774385:dw|

15. Artchicky Group Title

okay now i understand

16. hba Group Title

$\frac{ 1 }{ x }= \frac{21}{110}$ $\ x=..$

17. Artchicky Group Title

5.23?

18. saifoo.khan Group Title

Yes.

19. saifoo.khan Group Title

Lol. I'm speechless.