SOLUTION: a video game system and several games are sold for $564. the cost of the games is 3 times as much as the cost of the system. find the cost of the system and cost of the games
Let x = the cost of the system.
Then the cost of the games is 3x, according to the condition.
Your "money" equation is
x + 3x = 564 dollars
4x = 564
x = = 141 dollars is the cost of the system.
Then the cost of the games is 3*141 = 423 dollars.