Final answer:
To double the number of cookies, LaTonya should use 3 cups of chocolate chips.
Step-by-step explanation:
To find out how many cups of chocolate chips LaTonya should use to double the number of cookies, we can use a proportion. The original recipe calls for 1 and a half cups of chocolate chips for 25 cookies.
So, the ratio of chocolate chips to cookies is 1.5 cups/25 cookies.
To double the number of cookies, we need to find how many cups of chocolate chips are needed for 50 cookies. Using the proportion, we set up:
1.5 cups / 25 cookies = x cups / 50 cookies
Cross-multiply to solve for x:
x = (1.5 cups * 50 cookies) / 25 cookies
= 3 cups
Therefore, LaTonya should use 3 cups of chocolate chips to double the number of cookies.