SOLUTION: I'm working on my exam review and I can't figure out how to do this question. The question is: a trolley loaded with 6 small cans of paint has a mass of 15.7kg. When 5 more cans ar

Question 622124: I'm working on my exam review and I can't figure out how to do this question. The question is: a trolley loaded with 6 small cans of paint has a mass of 15.7kg. When 5 more cans are added, the mass becomes 21,7kg. Let M kilograms represent the mass of the trolley and n kilograms the mass of a small can of paint. Determine the mass of a small can of paint and the mass of the trolley. In order to solve this I need to use substitution or elimination.
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!

subtract these two
-------------------

Now use that value of n in the first equation to solve for M

You can check your answer by using M and n in second equation to ee if the result is 21.7
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