Question

A certain triathlon consists of a 3.1-mile swim, a 120-mile bicycle ride, and a 26.6-mile run. At one point, a participant had completed four times as many miles as the

number of miles left to complete. How many miles had he completed at that mark?

Answer 1

26.6a

Explanation:

possible derivation:

`(d)/(da\\)` (a 26.6)

Factor out constants:

= 26.6 [
`(d)/(da)` (a) ]

the derivative of a is 1 :

= 1 26.6