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Hi,
jay is 40 years old while his son christ is 15 years old. how old will jay be when his age is twice that of christ?
Let x represent the numbers of years it will take for jay's age to be twice that of christ?
40 + x = 2(15 + x)
40 + x = 30 + 2x
10yr = x, the number of years it will take. Jay will then be 50.
and***checking our Answer..10 years from now... (christ will be 25)