Comparing to M25 grade of concrete, M60 will be economical or expensive with reinforcement minimum requirement in 13 storey residential building?

[AS-SHABBIRK]

Comparing to M25 grade of concrete, M60 will be economical or expensive with reinforcement minimum requirement in 13 storey residential building?
How much? What is exact proportion of M60 grade concrete including all required?

 

[Dnyan Deshmukh]

It will be expensive compare with M25 grade concrete and minimum reinforcement requirement.