Well first off lets subtract 7 from 11.2, that gives us 4.2 so we know it has walked 1 minute so far...and now we divide 4.2 from 7 which gives us 0.6 so it has walked 1 minute and 36 seconds
He is 68.
Even though he is half your age, that doesn't mean that he will be half your age all your life. That just means he will be X years younger.
If you need an example:
Your brother was two when you are four. So when you become 6, your brother will be come 4. The fact that he is half your age doesn't really matter once you start growing up, because he will never be half you age again.
Hope you could understand.
If you have any query, feel free to ask.
125/380 i think is the answer
