In a company of CE, ME and EE, the sum of their ages is 2160 and ave is 36. The
In a company of CE, ME and EE, the sum of their ages is 2160 and ave is 36. The average age of CE and ME is 39, of CE and EE is 110/3 and EE &ME is 360/11. If the ages of CE is increased by 1 of ME is increased by 6, and of EE increased by 7, the average of all their ages increased by 5. How many CE are there?
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