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2 years ago

50% of a certain number is 39. What is the number?

1 answer:

8 0

Let that certain number be 'n'

50% (n) = 39

50% ⇒ 0.5

0.5 (n) = 39

Divide both sides by 0.5

0.5n = 39
/0.5 /0.5

n = 78.

So that certain number is actually <em><u>78! :)</u></em>

CROSS CHECK:

50% of 78

0.5 × 78

= 39

Hope this helps! :)

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Step-by-step explanation:

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Step-by-step explanation:

Let the number of bracelets be b and the number of necklaces be n

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An equation is shown below:

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5(2x - 8) + 15 = -15
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