Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Mathematics
Replies: 5   Last Post: Aug 20, 2013 2:03 PM

 Messages: [ Previous | Next ] Topics: [ Previous | Next ]
 grei Posts: 132 Registered: 11/27/12
Re: grei it's for you
Posted: Aug 20, 2013 2:03 PM

"you called number of pages he read on second day = P
That's OK. But
"P + .20P = 60
If I define it so than
(no. of pages on second day) + (20% of no. of pages on second day) = 60
Which is wrong!!!!!
because as in question no. of pages on second day are 20% less than 1st day."
This Y0UR error. the original post said
"This was 20% more than he read on the second day"
That is NOT the same as saying "what he read on the second day was 20% less than he read on the first day.

For example if he read 120 pages on the first day and 100 pages on the second day, then on the first day, he did read 20 pages more so 20/100= 20% more on the first day than on the second day. But 20% of 120 is 24 pages so "20% less than on the first day would be 120- 24= 96, not 100.

Date Subject Author
8/15/13 amna9028
8/17/13 grei