How do you find the ratio of a to b in lowest terms if $a= 12$ cm and $b= 84$ cm?

Question

2402 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-04-03T00:25:48

The ratio of $a:b$ is $1$ cm $:7$ cm.

Given $a = 12$ cm and $b = 84$ , the ratio $a:b$ would be
$12$ cm : $84$ cm

Dividing both sides by $12$ gives us:
$1$ cm $:7$ cm

Answer 2 · 2015-04-03T00:27:54

Try to divide both by the same number

$a/b = 12/84=$ (divide both by 12 and you get) $=1/7$

You can do this step by step if you're not good at your multiplication tables (we'll do 2-2-3):

$a/b =12/84 =6/42=3/21=1/7$

How do you find the ratio of a to b in lowest terms if a= 12a= 12 cm and b= 84b= 84 cm?