Question 119063: GOLIATH IS 12 YEARS OLDER THAN DAVID. IN SIX YEARS, GOLIATH'S AGE WILL BE TWICE OF DAVID'S AGE. HOW OLD IS GOLIATH NOW? Found 3 solutions by checkley71, stanbon, awang1996:Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! DAVID IS D YEARS OLD.
GOLIATH IS D+12 YEARS OLD.
IN 8 YEARS THEY WILL BE (D+8) & (D+20) RESPECTIVELY.
2(D+8)=D+20)
2D+16=D+20
2D-D=20-16
D=4 YEARS OLD IS DAVID'S AGE NOW.
GOLIATH'S AGE NOW=4+12=16
PROOF
2(4+8)=4+20
2*12=24
24=24
You can put this solution on YOUR website! GOLIATH IS 12 YEARS OLDER THAN DAVID. IN SIX YEARS, GOLIATH'S AGE WILL BE TWICE OF DAVID'S AGE. HOW OLD IS GOLIATH NOW?
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NOW DATA:
Let David's age be "x" yrs. old
Then Goliath is "x+12" yrs. old
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Six years from now:
David will be "x+6" yrs. old
Goliath will be "x+18" yrs old
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EQUATION:
G = 2D
x+18 = 2(x+6)
x+18 = 2x+12
x = 6 (David is 6 yrs old)
x+12= 18 (Goliath is 18 yrs. old)
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Cheers,
Stan H.
You can put this solution on YOUR website! GOLIATH IS 12 YEARS OLDER THAN DAVID. IN SIX YEARS, GOLIATH'S AGE WILL BE TWICE OF DAVID'S AGE. HOW OLD IS GOLIATH NOW?
d+12=g
g+6=2(d+6)
d+18=2d+12
subtract d from both sides
d+12=18
subtract 12 from both sides
d=6
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