I have attached the doubt with this email.

My question is if x is moving 50% faster then that means x will travel 40 miles and in that time y will travel 20 miles. So, after y takes another 20 miles, x will cover the distance of y with a total of 80 miles in 8/3 hours as given. So, why can’t we calculate the speed of y using the following:

d=rt

40=r*8/3

r= 15

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