Question

Megan and Julia can finish apiece of work in 15 days. Megan can do the job herself in 20 days . If julie wanted to do the job alone how long would it take her

Answer 1

what time of the month is it?

Answer 2

lmao what

Answer 3

:) nuthin

Answer 4

1/M + 1/N = 1/15 do you see why?

Answer 5

15 days; working together, in one day 1/15 is done

Answer 6

yeah kinda

Answer 7

we know M can do 1/20 in a day; working alone takes her 20 days, so 1/20 in a day

Answer 8

1/20 + 1/N = 1/15 ; now we can solve for N

Answer 9

Why i called julie N instead of J i cant tell; i was thinking Nancy lol

Answer 10

I absolutely hate math, im just learning at this today

Answer 11

oh well, shell just have to be Nancy, cant undo whats been done lol

\[\frac{1}{N} = \frac{1}{15}-\frac{1}{20}\]
\[\frac{1}{1} = N(\frac{1}{15}-\frac{1}{20})\]
\[\frac{1}{(\frac{1}{15}-\frac{1}{20})} = N\]

Answer 12

\[\frac{1}{(\frac{1}{15}-\frac{1}{20})} = N\]
\[\frac{1}{(\frac{4}{60}-\frac{3}{60})} = N\]
\[\frac{1}{\frac{1}{60}} = N\]
\[\frac{1}{\frac{1}{60}}*\frac{\frac{60}{1}}{\frac{60}{1}} = N\]
\[60 = N\]

Nancy is slowww