we have
Yellow paint

Find the
amount of yellow paint left after painting the mural

Green paint

Find the
amount of green paint left after painting the mural

Blue paint

Find the
amount of blue paint left after painting the mural

Find the
total amount of paint left after painting the mural


therefore
the answer is

Answer: 3rd one
Step-by-step explanation:
140 * .45 = 63
Add 140 and 63
2. 203 because you are adding 45% of 140 to increase it by 45%
Same with the other except subtraction
4. 15
I think this is right, I am not sure

The second product is 3 times the first one.