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3 years ago

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3 times the sum of a number n and 12 is 45

1 answer:

Jet001 [13]3 years ago

7 0

In order to solve this question we first have to break down the terms.

Sum = Adding
Times = Multiplying.

The question states "3 times the sum of a number n and 12 is 45". In written form, it would be the following:

3(12+n) = 45

To solve this you first divide both sides by three and you'd be left with the following:

(12+n) = 15.

Then subtract 12 from both sides. Leaving you with:

n = 3

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Ballpoint pens cost $1.50 a dozen for the first 200 dozen a store buys from a wholesaler and $1.25 a dozen for those bought in a

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Solution:

We are given that

Ballpoint pens cost $1.50 a dozen for the first 200 dozen a store buys from a wholesaler.

$1.25 a dozen for those bought in addition to the first 200 dozen.

we have been asked to find

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Read 2 more answers