Taro began to read a certain book by 7 pages a day and Jiro began by 5 pages a day.
They started reading at the same time.
On the day when Taro finished reading, there still 114 pages were left for Jiro.
Find the pages of this book.
Answer
399 pages
Solution
The difference of pages a day is 7 - 5 = 2 pages.
As the difference became 114 pages, number of days they read is 114 / 2 = 57 days.
Therefore the number of pages of this book is 7 × 57 = 399 pages.
They started reading at the same time.
On the day when Taro finished reading, there still 114 pages were left for Jiro.
Find the pages of this book.
Answer
399 pages
Solution
The difference of pages a day is 7 - 5 = 2 pages.
As the difference became 114 pages, number of days they read is 114 / 2 = 57 days.
Therefore the number of pages of this book is 7 × 57 = 399 pages.
