Answer:
4.7 minutes
Explanation:
Let's use X as the answer
3 feet is our starting position.
Every minute is 10 feet.
If we already have 3 feet then we know it has to be less than 5.
It can't be 4 since that would be 43.
Your Equation would be 3+10x=50
Our answer has to be 4.7 because
4.7*10=47
47+3=50
Your final equation would be:
3+(10*4.7)=50
Hope I helped!