Asked by iyaloo
In three years time a dog will be as old as his owner was five years ago.Their present ages total 22 years.Find the age of each using simultaneous equations
Answers
Answered by
Reiny
age of dog ---- x
age of owner --- y
x + y = 22 or y = 22-x
age of dog 3 years from now: x + 3
age of owner 5 years ago : y - 5
x + 3 = y - 5
x + 3 = 22-x - 5
2x = 14
x = 7 , and y = 22-7 = 15
or the two equations were:
x + y = 22
x - y = -8
add them ..
2x = 14 , just as before
age of owner --- y
x + y = 22 or y = 22-x
age of dog 3 years from now: x + 3
age of owner 5 years ago : y - 5
x + 3 = y - 5
x + 3 = 22-x - 5
2x = 14
x = 7 , and y = 22-7 = 15
or the two equations were:
x + y = 22
x - y = -8
add them ..
2x = 14 , just as before
Answered by
Martha
Thank u for the answer
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