For both of them you just make them into fraction.
For #2
![(36)/(120)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/u36lg91ixolla0dargzv62zf3604emqyws.png)
and then you simplify it
36. ÷12 3
-----. =. --------
120. ÷12 10
After this you want to change the fraction to a percentage.Percentage are out of 100
so you simply will multiply by 10 to the top and bottom
3. 30
----. * 10 =. -----. = 30%
10. 100
The answer is 30%
For number #3
you simply put 63 over 240
63
-----
240
![63 / 3= 21](https://img.qammunity.org/2019/formulas/mathematics/middle-school/nho2uk67w9etoxj12zu0p5cyxstseffjah.png)
![240 / 3 = 80](https://img.qammunity.org/2019/formulas/mathematics/middle-school/psdn4q42klcdahvj12cwhyaehuy86qgojy.png)
![(21)/(80)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/kfokm6rmrix0t5m8mac4d6bwaqo9uinafp.png)
21
----
80
is that answer because it can't be simplified
after that