self Maths Puzzle

Station B is to the East of Station A. A train starts from Station A at 12 noon, traveling at a constantspeed of x miles per hour toward Station B. At 12:30 PM, a train starts from Station B at a constant speed of y miles per hour toward Station A. When will they meet each other?
(1) y=4x/3
(2) x=60 miles per hour

Read Solution (Total 3)

self Other Question

1,4,13,40.............? Mr. David usually starts at 9:00AM and reaches his office just in time, driving at his regular speed.Last Wednesday, he started at 9:30AM and drove 25% faster than his regular speed. Did he reach theoffice in time?

(1)Last Monday, he started to his office 20 minutes early, drove 20% slower than his regularspeed, and reached his office just in time.
(2)Last Tuesday, he started to his office 10 minutes early, and reached the office 10 minutesearly driving at his regular speed.