Trains problem no.3, quantitative aptitude , mathematics

How do you solve quantitative aptitude questions?
How do you answer aptitude questions?
What are the easy topics in quantitative aptitude?
How can I clear my aptitude easily?
How can I improve my aptitude?
What is the fastest way to solve a quantitative reasoning question?
How do I pass an aptitude test?
What is basic aptitude?
Placement, banks and government exams
Mathematics from low level to advanced level
#Excel in career

mathematics