1 hr = 10/10
1/10 of an hr= 6 min
(7)(6)=42
Saturday she rode her bike for 42 min
Sunday
1 hr = 5/5
1/5 of an hr = 12 min
(3)(12)= 36
On sunday she rode her bike for 36 min
Finally
42-36= 6
She rode her bike 6 min longer on saturday than sunday
500,000
Rounded to the hundred thousands
The answer you are looking for is 124.
You can find this answer by simply multiplying 62 by 2.
I hope this helps!