Question

Zachary travels on a journey of 50 miles. He spends half of
his time riding his horse and half of his time walking. When he
rides his horse, he covers 9 miles every hour. When he walks,
he covers 3 miles every hour. How much time does it take
him to complete the journey?

Answer 1

I divided 50 miles by 2 = 25 miles (walked) 25 miles (horseback)
I divided 25 by 3 = 8.33
I divided 25 by 9 = 3
Added together = 8.33 + 3 = 11.33
So time to complete the journey 11.33 hour

Answer 2

50/2 = 25

Therefore he spent 25 miles on his horse and 25 miles walking

He covers 9 miles every hour on his horse

25/9 = 2 $\frac{7}{9}$ hours

He covers 3 miles every hour walking

25/3 = 8 $\frac{1}{3}$ hours

Total time taken to complete his journey = 2 $\frac{7}{9}$ + 8 $\frac{1}{3}$ = 11 $\frac{1}{9}$ hours