Question

A car mechanic finds that the sound level of a car with a defective muffler is 108dB. After she fixes a hole in the muffler, the sound level is 78dB. How much louder was the car before the muffler was repaired?

Answer 1

108 dB - 78 dB?

Answer 2

30 /10

Answer 3

To find out how much louder the car was before the muffler was repaired, we need to calculate the difference between the two sound levels.

Difference = 108 dB - 78 dB
Difference = 30 dB

Therefore, the car was 30 dB louder before the muffler was repaired.