1550.21 – Speeding Cycles

Tags:Problem Set 9Pre-AlgebraAlgebra Prep

A pack of motorcyclists just whizzed down my street, mostly on two-wheeled Harleys but a few on Slingshots (three-wheeled). I counted 8 cyclists. My friend counted 19 wheels (the cycles were spread out enough so your friend could make this count). How many of the cycles were Harleys and how many were Slingshots?


With 8 cyclists there are at least 16 wheels, but there are 19 wheels. The extra 3 mean there are 3 Slingshots and 5 Harleys. Question: why did your friend decide to count wheels?