Answer:
175/3 or 58.333...
Step-by-step explanation:
This problem can be complex, but I'll simplify it. I apologize for the challenges involved in formatting fractions correctly. To ensure accuracy, I've added several parentheses that may seem unnecessary.
Let d denote the distance between the two cities.
The time it takes can be expressed as d/r, where r represents the speed; thus, from B to NY, it is d/50.
In the same manner, from NY to B, it's d/70.
The average velocity can be determined as 2d divided by the sum of d/50 and d/70, representing the average time.
Next, eliminate d from the equation to reach (d/d)*2/(1/50+1/70).
Now, you can multiply by the Least Common Multiple (LCM) over itself, which is 350/350.
The result after performing this calculation will yield 700/12, equating to 58.333...(This is how you would enter it into your RSM browser) I hope this clarification is useful. My apologies for the delay.
