posted by Da S on .
during school holidays, Chris read 312 pages of a book at first.he read the remaining pages in 20days, w/ the same number of pages each day. during these 20days, he read one-twelve of the book in 6days.how many pages of the book did he read in the 6days?
in 6 days he read p/12
In the last 20 days, he read 20/6 * p/12 = 20p/72 = 5p/18
So, 312 = 13p/18; p = 432
starting with 432 pages, he read 312, leaving 120
During each of the 20 days, he read 6 pages
In 6 days he read 36 pages, which is 432/12
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