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Ganezh [65]
3 years ago
13

it takes an air pump 4.0 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). How long will it take to fill a qu

een sized mattress (60 by 8.75 by 80 inches)?
Mathematics
1 answer:
Ivahew [28]3 years ago
7 0

Volume of twin sized mattress =

39* 8.75* 75 = 25593.35 cubic inch

Volume of queen sized mattress =

60* 8.75* 80 = 42000 cubic inch

To fill 25593.35 cubic inch it takes 4 minutes

To fill 1 cubic inch it will take = \frac{4}{25593.35} minutes

So to fill 42000 cubic inch it will take = \frac{4}{25593.35} * 42000

= 6.56 minutes.



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From the given table, we have;

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