Question 1195263
Bob read a book. He read 342 pages on Monday. On Tuesday he read 1/4 of the remaining book. He was left with 9/50 of the book. 
How many pages were there in the book. 

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p = # of pages
342 + (1/4)*(p-342) + p*9/50 = p
34200 + 25p-8550 + 18p = 100p
25650 + 43p = 100p
p = 450 pages