Question
Betty read a book from Tuesday to Friday. Every day, she read 5 more pages than the day before. She read 78 pages on Friday. How many pages of the book did Betty read from Tuesday to Friday altogether?
2 m

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Betty read a book from Tuesday to Friday. Every day, she read 5 more pages than the day before. She read 78 pages on Friday. How many pages of the book did Betty read from Tuesday to Friday altogether?