If there is 1.55 litres of jellybeans in the jar, 10 jelly beans are replaced with 18mls of water, how many jelly beans are in the jar

Question

Is there is a jar of jelly beans, and 10 of the jelly beans get replaced with 18mls of water, how many jelly beans are in the jar?

Answer 1

18 mls/10 beans = 1.8 mls/bean

1.55 liters x 1000 ml/liter x 1 bean/1.8 mls = 861 beans