Question

In a triathlon, Jenny swam for 1 hour, biked for 1.75 hours, and ran for 1 hour. Her average biking speed was 2 times her average running speed, and her average running speed was 8 times her average swimming speed. The total distance of the triathlon was 55.5 kilometers. Write and solve a linear equation to calculate Jenny’s average swimming speed (x) in kilometers per hour. Give your answer to the nearest tenth.

Answer 1

(i answered the other question so here's the answer again)

Jemmy's swimming speed = 1.5 km/h