I am able to score 60-64 marks in previous years papers and around 40-45 in test series ...will I be able to clear gate

Dear aspirant, taking into consideration a 10% increase in score from your tests, you might score around 50... While that may be enough for qualifying cutoff admission cutoff will be a close call. I would encourage you to work harder and increase your score a bit more.
Refer to this article for more information
https://engineering.careers360.com/articles/gate-cutoff

Dear aspirant, taking into consideration a 10% increase in score from your tests, you might score around 50... While that may be enough for qualifying cutoff admission cutoff will be a close call. I would encourage you to work harder and increase your score a bit more.

Refer to this article for more information https://www.google.co.in/url?sa=i&source=web&cd=&ved=2ahUKEwjMsrOt6-zfAhUSEnIKHWPgAToQzPwBegQIARAC&url=https%3A%2F%2Fengineering.careers360.com%2Farticles%2Fgate-cutoff&psig=AOvVaw2ZIxpSFoLxxfUmLkqi8Z3v&ust=1547540394957544