Question 925378
Ben is 70 years old and Ishaan is 18 years old. 
How many years will it take until Ben is only 3 times as old as Ishaan?
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Let that number of years be "x"::
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Equation:
70+x = 3(18+x)
70+x = 54 + 3x
2x = 16
x = 8 years
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Cheers,
Stan H.
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