Answer: 6/15 (2/5)
Step-by-step explanation: Since the problem says 3/5 of the recipe, you have to multiply. 'Of' means to multiply. Multiply both of the fractions across, first the numerators, then the denominators. You will get 6 as your numerator and 15 as your denominator. Reduce the fraction by 3, and your final simplified answer is 2/5.
Hope this helps!