Question

what is 3/5 of 30? and how do you work this out?

Answer 1

Whenever you say `some fraction OF some number', you can multiply the two together to get your number. So, in this case:

3/5 OF 30 means:

\[\frac{3}{5}\times 30\]

Answer 2

Can you do that multiplication?

Answer 3

No

Answer 4

do I do 3*30 and then 5*30?

Answer 5

i've found the answer!!!

Answer 6

AWESOME!

Answer 7

Hehe, sorry for abandoning you there for a minute. That was the equivalent of:

\[\frac{3}{5}\times \frac{30}{1}\]

So you can multiply the 3 across and keep the 5, then do the division.

Answer 8

is the answer 18?

Answer 9

Yes, it is. \[\frac{3}{5} \cdot \frac{30}{1} = \frac{3 \cdot 30}{5 \cdot 1} = \frac{3 \cdot 6}{1} = \frac{18}{1} = 18\]