 
 <translate> Tony walks 3 miles at 3 miles per hour for 3 / 3 = 1 hour. Tony also runs 10 miles at 5 miles per hour for 10 / 5 = 2 hours. Thus, each day he exercises for 1 + 2 = 3 hours. Over the course of one week, he exercises for 3 * 7 = 21 hours.
The answer: 21. <hau> Tony yana tafiya mil 3 a mil 3 a kowace awa don 3 / 3 = 1 awa. Tony kuma yana gudu mil 10 a mil 5 a awa daya don 10 / 5 = 2 hours. Saboda haka, a kowace rana yana motsa jiki na awa 1 + 2 = 3. A cikin mako guda, yana motsa jiki na tsawon sa'o'i 3 * 7 = 21. Amsar ita ce: 21. 