Answer:
I think 75%.................
(a) 32 orange marbles
the ratio of red : blue = 18 : 48 = 3 : 8 ( in simplest form )
the ratio of green : orange = 3 : 8 ( equal ratio )
divide green by 3 to obtain 1 part of ratio then multiply this value by 8 to obtain the amount of orange marbles
3 parts → 12
8 parts → 12 × 
= 32 orange marbles
Step-by-step explanation:
as we see in the sequence, each term is twice of the previous term.
we mark the Nth as a(N), then:
a(N)=2a(N-1)
To figure out 23.2%, first figure out how much 1% is by dividing 1500 divided by 100=15
Next, multiply the 15(1%) by the 23.2% to figure out how much that is.
23.2 x 15 = 348
Now, you have to add thr investment ($348) to his originsl amount of money ($1500).
$1500 + $348 = $1848
Zach now has $1848
