Soroban's alternative is nice, but if the intent is for you to LEARN by using the

regualr formula speed = distance / time (learn to skate before playing hockey!), then:

Code:

```
Ernesto:.....@440.........[d]...............> x hours
Johnny:......@528.........[d]...............> x-1/4 hours
```

Since speed = distance / time, then distance [d] = speed * time; so:

d = 440x (Ernesto)

d = 528(x - 1/4) (Johnny) ; and you have:

440x = 528(x - 1/4)

Solve for x.

This is probably what your teacher expects; for YOU to do at least some work :idea:

I suggest you don't hand in Soroban's, but complete above instead; you'll have

egg on your face if teacher asks you to redo using regular formula!