If a swimmer swims 85.4 yards in five minutes, how many meters will he swim in 70 seconds?
1 yd = about .9144m and 5 min = 300 sec
So 85.4 yds. = 85.4 x .9144 = about 78.1m
So
78.1 / 300 = x / 70 cross-multiply
70(78.1)/300 = x = about 18.22m
