Question

Which proportion has a solution of 8?
a.thirty over twelve equals n over forty-five
b.twelve over thirty equals n over forty-five
c.twelve over n equals forty-five over thirty
d.twelve over thirty equals forty-five over n

Answer 1

lets start with the first choice \[\frac{ 30 }{ 12 }=\frac{ n }{ 45 }\]

Answer 2

whats 45 x 30 ?

Answer 3

1350

Answer 4

ok and 12 x n = 12n so you get 12n=1350 whats 1350 divided by 12?

Answer 5

112.5

Answer 6

ok so A is not right

Answer 7

lets try B. \[\frac{ 12 }{ 30 }=\frac{ n }{ 45 }\]whats 12 x 45?

Answer 8

540

Answer 9

now whats 540 divided by 30?

Answer 10

18

Answer 11

ok thats wrong. Lets try C . \[\frac{ 12 }{ n }=\frac{ 45 }{ 30 }\]

Answer 12

its c thx

Answer 13

360 divided by 45 is? c: good job :)