Find the value of y. 7.
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3
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y= V[?]
Give your answer in simplest form.
I’m stuck can I please get some help fr tho. I’ve tried this over and over and I can’t get it correct

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling