Answer:
0.75 or three-fourth of a cup of nuts.
Step-by-step explanation:
Given that:
Original recipe has
1. One and half cups of peanut butter
2. Unknown number of cups of nuts, let this amount be [tex]x[/tex] cups.
3. Three very ripe bananas.
Total amount of chips and nuts after doubling = [tex]4\frac{1}{2}[/tex] cups
Before doubling, total amount of chips and nuts = [tex]4\frac{1}{2} \div 2 = 2.25[/tex]
Now, as per given question statement:
[tex]2.25=x+1.5[/tex]
Subtracting the number 1.5 from both the sides to find the value of [tex]x[/tex]:
[tex]2.25-1.5=x\\\Rightarrow x = \bold{0.75}[/tex]
Therefore, 0.75 or three-fourth of a cup of nuts is the original amount in the recipe.