Answer:
7
Step-by-step explanation:
3RD MAN: 1
2ND MAN: 2
1ST MAN: 4
3rd Man = 1/2+1/2 = 1
2nd Man = 1+1 = 2
1st Man = 2*2 = 4
12 3/5 x 30 is 378 thats how many feet in 30 mins
and the equation:
m = minutes
m(12 3/5)