$13
Count back a $10 bill and 3 one dollar bills
The answer to your question is n is equal to 70
Answer:
Step-by-step explanation:
-0.25x+1.75x<-1.75+2.5 x
sift terms containing x to right and constant term to left
1.75<2.5 x+0.25x-1.75 x
1.75<2.75x-1.75x
1.75<1.00 x
or 1.75 <x
or x>1.75
Each runners time would be an average of 18.1
72.4/4=18.1
He has 1/6 left because what u had to do is cross multiply which is 1/2-1/3 =1/6
Hope this helps :)