Answer:
30 miles per hour downstream
20 miles per hour upstream
Step-by-step explanation:
divide 4 by 120 to get the rate downstream
divide 6 by 120 to get the rate upstream
Hope this helps :(
20x would be ur answer.
4x>74+9
4x+2×45
2×45x
74x×2
4x>9
7^9