Answer:
Richard, at 2/3, versus Cooper, at 5/8
Step-by-step explanation: 12 min
Richard's ratio of cardio to resistance is R = ------------ = 2/3
18 min
10 min
Cooper's is C = ------------ = 5/8
16 min
The LCD here is 24. Rewrite 2/3 and 5/8 with denominator 24 for greater ease in comparing the two fractions/ratios:
R = 16/24 and C = 15/24
So it becomes obvious that Richard does a higher ratio of carido to resistance.