High School

A number tripled is equal to 57. Let [tex]n[/tex] be the number.

Which equation can be used to find the value of [tex]n[/tex] and what is its solution?

A. [tex]n + 3 = 57[/tex]; [tex]n = 54[/tex]

B. [tex]n - 3 = 57[/tex]; [tex]n = 60[/tex]

C. [tex]\frac{n}{3} = 57[/tex]; [tex]n = 171[/tex]

D. [tex]3n = 57[/tex]; [tex]n = 19[/tex]

Answer :

Answer:

D. 3n = 57; n = 19

Step-by-step explanation:
Another way of saying "a number tripled..." is "3 times a number...". So 3xN, or 3n=57, then divide both sides by 3 and you get n=19. Answer is D.

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