1. If n + n + n = 60, what is the value of n ? A 6 B 10 C 15 D 20?

Answer 1

Your equation is:
n + n + n = 60

Gather your n terms:
3n = 60

Divide both sides by 3:
n = 60/3

Simplify:
n = 20

Therefore the value of n is:
D) 20

Note: even without solving algebraically, you should be able to quickly test the answers:
6 + 6 + 6 = 18
10 + 10 + 10 = 30
15 + 15 + 15 = 45
20 + 20 + 20 = 60 <---

So either way the answer is n = 20.

Answer 2

Sometimes it helps to translate into everyday terms, such as "if I've just been charged 60p for three sausages, how much are they each?". Mathematics is about abstracting the essentials from such everyday questions, and developing a systematic rather than intuitive approach to answering them. If we use n as an abstract symbol to stand for "the price of one sausage in pence", then being charged 60p for three sausages can be written as "n+n+n=60". Or, saying the same thing slightly differently, 3n=60. (Mathematicians don't generally write in the multiplication symbol, 3n just means 3 x n.). Now, because 3n and 60 are equal, if we divide both by 3 the answers are equal too. 3n divided by 3 in just n. 60 divided by 3 is 20. So, n=20. Or one sausage costs 20p, as you probably knew already.

Answer 3

n+n+n=60
3n=60
n=20
D is the Ans.

Answer 4

n+n+n=60
=>adding 3n=60
dividing by 3
3n/3=60/3
n=20 the option D

Answer 5

the answer is d 20. Because, if you substitute n with your answers, its the only one that makes since
20+20+20=60

the others dont make since

Answer 6

60?

Answer 7

The answer is: the square root of 400.

Answer 8

Quit trying to get other people to do your homework for you.

Answer 9

20 pendejo!!!

Answer 10

n + n + n = 60
3n = 60

n = 20

letter (d)
₢