She reads at 55 pages per hour for 4 hours so 55*4 = 220 pages so far. This means that she read 220 and had 330 left so 220 + 330 = 550 so the book is 550 pages. If she reads 55 pages per hour and there is a total of 550 pages, 550/55 = 10 hours to read the book.
Answer: she is 60 years old because 48+12=60 yrs old now
Hope this helps you 3y=54-2
I can't see the whole diagram.. Can u fix the picture