What is the correct way to show a repeating decimal for the fraction ? 1.15
1.2
1.15...
1.15151515151515151515

A decimal number with a digit (or group of digits) that repeats forever. The part that repeats can also be shown by placing dots over the first and last digits of the repeating pattern, or by a line over the pattern. Also called a "Repeating Decimal".

Let x be the unknown distance from his scout camp to another camp. The time it takes for him to travel upstream is x / (5 + 3) and downstream x / (5 - 3)

The total time for him to travel forth and back is 10 hr. This may be mathematically expressed as,
              
                                         x/8 + x/2 = 10

Solving for x in this equation gives 16. Thus, the distance to the camp is 16 miles.