<u>Answer:</u>
The amount of butter, sugar and flour does Clifford need is 2.5 cups flour, 3.75 cups sugar and 1.25 butter
<u>Explanation</u>:
Consider the number of cup of flour used to be x
According to question,
Recipe calls for 1.5 times as much flour as sugar
Sugar =
Sugar = 1.5x
Butter = ½ x = 0.5x
According to question,  
Flour + Sugar + Butter = 7.5
x + 1.5x + 0.5x = 7.5
3x = 7.5
x = 2.5
Sugar = 1.5x = 1.5(2.5) = 3.75
Butter = 0.5(2.5) = 1.25
Clifford need is 2.5 cups flour, 3.75 cups sugar and 1.25 cups butter
 
        
             
        
        
        
P of 1st white marble = 4/ 12
and P of 2nd white in a row = 3 /11
total = ( 4/12) * ( 3/11)
  = 1/11
hope it helped
        
             
        
        
        
Answered by Norbert J.M..
Hope this helps.
 
        
        
        
Answer:
 x=17 plz the brainliest! 
Step-by-step explanation:
3x+39=90 
 3x+39-39=90-39
3x=51 
\frac{3x}{3}=\frac{51}{3}
x=17