Greg has walked miles
<em><u>Solution:</u></em>
Given that, Greg’s house is 0.8 miles from the library
Distance between house and library = 0.8 miles
Greg has walked of the distance
Therefore,
Distance walked = of the distance between house and library
Here "of" means multiplication
Thus we get,
Thus Greg has walked miles
$22.50
Explanation: add all the contributions and divide by the amount of them (ex: 25+40+30+15=110/4=22.5[making $22.50]
Umm if your talking about half of 1000 then its 500