Answer: she spent 3/20 of her money on candy.
Step-by-step explanation:
she went to a convenience store and spent 1/4 of her money on chocolate milk 3/5 of her money on a magazine. It means that the amount she spent at the convenience store for the magazine and on chocolate milk is
1/4 + 3/5 = 17/20
If she spent the rest of her money on candy, it means that the fraction of her money that she spent on candy is
1 - 17/20 = 3/20