Answer:
The number pages read on Thursday is 81 pages.
Explanation:
Hint - This is problem of Geometric Series.
On Monday Tim read 3 pages. He reads triple the number of pages as the previous day.
So on Tuesday he will read =
pages, so the series is

As Thursday is the 4th days.
So we have to find the 4th term.
We know that the nth term in a GP is,

where,
a = 1st term = 3,
r = common ratio = 3
n = 4
Putting the values,


