Question

The noise level of a library is about 40 decibels. The noise of traffic has a rating of about 85 decibels. How many times stronger is the noise of traffic than the noise of a library?

Answer 1

2.125

Explanation:

LIbrary noise = 40 decibels

traffic noise = 85 decibels

how many does 40 take to make 85? = X

40X=85

X=85/40

2.125