Answer:
4 hours
Step-by-step explanation:

21 · y = 3 · 28
21y = 84
21y ÷ 21 = 84 ÷ 21
y = 4
53 48 24 should be the answer but im not 100% sure
22.86 metres
The two goal lines are 4.0 metres (13.1) from the end boards, and the blue lines are 22.86 metres (75.0 ft) from the end boards
The answer can be found by found ride over run so 4/2 or 2/1=2