SOLUTION:
the sum of peters age and his fathers age is 40 years. in two years time peters father will be 3 times as old as peter. how old is peter and his father?
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the sum of peters age and his fathers age is 40 years. in two years time peters father will be 3 times as old as peter. how old is peter and his father?
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Question 697045:
the sum of peters age and his fathers age is 40 years. in two years time peters father will be 3 times as old as peter. how old is peter and his father?
work out the answer by using simultaneous equation method.
thanks Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! P+D=40
3(P+2)=(D+2)
3P+6=D+2
3P-D=2-6
3P-D=-4
P+D=40 ADD.
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4P=36
P=36/4
P=9 AGE OF PETER NOW.
9+D=40
D=40-9
D=31 AGE OF DAD NOW..
PROOF:
3(9+2)=31+2
3*11=33
33=33
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