Question 1014167
Sam is 30 years older than Bob.
10 years from now Sam will be twice as old as Bob.
Find the present ages
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Equations:
s = b + 30
s+10 = 2(b+10)
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Substitute for "s" and solve for "b"::
b+30+10 = 2b+20
b = 20 yrs (Bob's age now)
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Solve for "s":
s = b + 30
s = 20+30 = 50 yrs (Sam's age now)
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Cheers,
Stan H.