Question
Sabrina read a book from Thursday to Sunday. Every day, she read 13 more pages than the day before. She read 78 pages on Sunday. How many pages of the book did Sabrina read from Thursday to Sunday altogether?
2 m

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Sabrina read a book from Thursday to Sunday. Every day, she read 13 more pages than the day before. She read 78 pages on Sunday. How many pages of the book did Sabrina read from Thursday to Sunday altogether?