The ratio of the loudness of Lana’s earphones to the loudness of Polina’s earphones to the loudness of Goffy’s earphones is 6:5:3. If Polina’s earphones have a loudness of 420 decibels, find the total loudness of all three earphones.

9 answers

420/5 = 84

so, multiply all the values by 84 and you have

504:420:252

Now just add all that up.

1,176

1,176 decibels. You do 420/5 because Polina's earphones are the 5 in the ratio 6:5:3 and you get 84. Multiply the other 2 numbers in the ratio by 84 and you get 504+420+252 which is 1,176 decibels

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I got......
1,176!!

Let:
Lala be l
Polina be P
Goffy be G
the respective ratio is 6:5:3
Given that Polina's loudness is 420 decibels then the total loudness will be calculated as follows:
Total ratio=6+5+3=14
hence total loudness will be:
14/5×420
=1,176 decibels

1,176!

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