SOLUTION: (1). Bertha is three times as old as Martha but four times as old as Gifty. Fine their respective ages if the sum of their ages is 84 years.
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Question 1059000: (1). Bertha is three times as old as Martha but four times as old as Gifty. Fine their respective ages if the sum of their ages is 84 years. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Bertha is three times as old as Martha but four times as old as Gifty. Find their respective ages if the sum of their ages is 84 years.
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Equations:
B = 3*M
B = 4*G
B + M + G = 84
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B + (1/3)B + (1/4)B = 84
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12B + 4B + 3B = 12*84
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19B = 12*84
B = 53.05 years
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M = (1/3)53.05 = 17.68 years
B = (1/4)53.05 = 13.26 years
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Cheers,
Stan H.
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