Your answers are: Option A, because the investment will have a greater value.
And..... Option B, The investment will have a greater value.
You would take 175 divided by 5 which is 35 so 35 pages
Let A be the speed of hiker A and B the speed of hiker B.
let's say that B is faster than A, so B=A+0.5
we know that they met after 2 hours, and the distance each walked after 2 hours is given by:

One of the hikers travels at 4 miles per hour, the other one at 4.5 miles per hour
X equals 1 and Y equals 3
20 watches are made according to the cost of 385 dollars