Answer: 4 hours
Step-by-step explanation:
Let after x hours both have equal number of left pages.
Since, Jay's book had 278 pages, and he read 55 pages per hour.
Thus, after x hours the number of pages he read = 55 x
⇒ After x hours the pages he has left = 278 - 55x
Similarly, Odhràn's book had 238 pages, and he read 45 pages per hour.
⇒ After x hours the pages he has left = 238 - 45x
Therefore, we can write,
278 - 55 x = 238 - 45 x
⇒ 278 - 55 x + 45 x = 238
⇒ 278 - 10 x = 238
⇒ - 10 x = 238 - 278
⇒ - 10 x = - 40
⇒ x = 4
Hence, after 4 hours they have same number of pages left.
They will read for 4 hours and they will both have 58 pages left
This is correct because it was right in khan academy!
