ANSWER:
Barran read 260.4 pages altogether in the time of 7 hours.
SOLUTION:
Given, that barran read 74.4 pages in two hours.
So, number of pages read by barran in one hour =
= 37.2
Then, after reading for five more hours, number of pages covered in that span of five hours is given as
So, Barran read 186 pages in next 5 hours
Now, total pages read = pages read in first two hours + pages read in next five hours
Total pages read = 74.4 + 186 = 260.4 pages
Hence, Barran read 260.4 pages altogether in the time of 7 hours.