Final answer:
Jalil used 1/8 cup more water than sugar in his mixture.
Step-by-step explanation:
To find out how many more cups of water Jalil used compared to sugar, we can subtract the amount of sugar from the amount of water. Jalil mixed 3/4 cup of sugar with 5/8 cups of water. To subtract fractions, we need a common denominator. The common denominator for 4 and 8 is 8. So, we can rewrite the fractions with 8 as the denominator: 3/4 = 6/8 and 5/8. Now, we can subtract: 5/8 - 6/8 = -1/8. Therefore, Jalil used 1/8 cup more water than sugar in his mixture. The answer is option c) 1/8 cup.