Solve the simultaneous equations

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

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

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.