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January 30, 2015

January 30, 2015

Posted by **Kelly** on Saturday, June 15, 2013 at 4:25pm.

So far, I've computed the LCM for each which comes out to 2^4*3^2= 144. So every 144 days she will do both things at the same time.

After that I added up all the days in each month starting at September 17th, So I got 30-17= 13, then added 13+ 31(Oct)+30(Nov)+31(Dec)+31(Jan)=136, then 144-136=8 so it goes into the next month meaning that the two things will occur together on February 8th.

Then to find the day I started with:

Friday- 0

Saturday-1

Sunday-2

Monday-3

Tuesday-4

Wednesday-5

Thursday-6

Friday-7

then 144/7= 140 R4 so it will be on a tuesday.

So, the full answer I got was Tuesday February 8th, 2013. If someone could just read through this and maybe help me with the part where I need to find the day of the week that would be awesome thanks!

- Math For Educators -
**Steve**, Saturday, June 15, 2013 at 10:51pmLooks pretty good to me.

144/7 = 20 R4 but it's the remainder that counts

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