I don't know about the first one but for the second one:

Hello from MrBillDoesMath!
Answer:
1/2
Discussion:
6/12 = => as 12 = 6*2
6 /( 6*2) = => cancel 6's in num and denom.
1/2
Thank you,
MrB
The first thing you would do is add all the numbers to get the total budget : $1500
Next you would calculate the present to get : 24.2% or just 24% if your rounding
Take whatever side lengths you have and divide that number by 1/3 in your calculator and what number is shown after doing this is the answer