300
Justin, Sue, and Marissa each have an aqarium at home. Sue has 18 fish. Marissa has twice as many fish as Sue. Justin has 7 fewer than Marissa. Which shows the number of fish that each person has?
a. Justin 7, Sue 18, Marissa 14
b. Justin 29, Sue 18, Marissa 36
c. Justin 11, Sue 18, Marissa 9
d. Justin 43, Sue 18, Marissa 36
b. Justin 29, Sue 18, Marissa 36