The sum of two consecutive odd numbers in a set of three consecutive odd numbers is 5 more than the third number. What is the 2nd of those numbers 7
(1) 5
(2) 7
(3) 9
(4) 11
A train crosses a pole in 15 seconds while a 100 metre long platform in 25 seconds. What is the length of the train?
1) 125 m
2) 135 m
3) 150 m
4) 175 m
