Answer:
Below
Step-by-step explanation:
9
1 5/7 hours.
1/3+1/4 = 7/12
1/7/12= 1.714 hrs
percentage of adults= number of adults over total number of persons times 100;
400/400+350*100
400/750*100
40/75*100
8/15*100
8/3*20
160/3
=53.3%
