I believe the answer is 5. Hope this was right for you.
The square root of 7056 is
84
It’s A because (x) the number of cake equal 12 in price
It's wrong so unreasonable because 2/5 is 4/10 so 9/10 - 4/10 is 5/10 which is a 1/2
The cream paint is 3/2 of the red, since there are three parts cream for every two parts red. Similarly, the blue paint is 1/2 of the red. Thus, there are 3/2*4=6 liters cream paint and 1/2*4=2 liters blue paint.