Henrikh lives x blocks from his office.

Henrikh lives x blocks from his office. It takes him 1 minute per block to walk to work and 20 seconds per block to ride his bicycle to work. If it takes him exactly 10 minutes more to walk to work than to ride his bicycle, then x equals

Quiz

Answer/Solution

15

Steps/Work

The best way would be...
Per km, he takes 40 secs extra if he walks
So he will take 10 mins or 10*60 secs in 10*60/40 =15 km
ANSWER:D