What will be the resultant decibel level when two sources make noise of equal decibels?

Q. What will be the resultant decibel level when two sources make noise of equal decibels?

A.            Decibel level will be the same

B.            Decibel level will increase by 3 decibels

C.            Decibel level will decrease by 3 decibels

D.            Decibel level will be equal to the sum of decibels of the two sources

Answer: Decibel level will increase by 3 decibels