Final answer:
To make 2/3 of a cookie recipe that calls for 3/5 cup of butter, Rama should use 2/5 cup of butter after multiplying 3/5 by 2/3 and simplifying the fraction.
Step-by-step explanation:
The question asks how much butter Rama should use when making 2/3 of a cookie recipe that originally requires 3/5 cup of butter. To find the answer, Rama should multiply the original amount of butter by the proportion of the recipe she is making.
First, calculate the required amount of butter:
- 3/5 cup of butter × 2/3 =
- 3 × 2 = 6 and 5 × 3 = 15, so it turns into 6/15,
- which simplifies to 2/5 cup of butter (since 6 and 15 are both divisible by 3).
Rama should use 2/5 cup of butter to make 2/3 of the cookie recipe.