Together, Bob, Colin and Dave weigh $$195\text{kg}$$. Bob weighs $$9\text{kg}$$ more than Colin and $$6\text{kg}$$ more than Dave. How much does Bob weigh? 
Overseas Competition->Knowledge Point->Word Problem Modules->Questions Involving Sum, Difference and Multiples->Problems Involving Sum and Difference->Sum and Differences Problems with multiple Variables
Nil 