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lordcaos066
09.01.2021 •
Mathematics
A man is twice as old as his son. Twelve years ago, the man
was 3 times as old as his son. How old are the father and son
today?
Solved
Show answers
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Ответ:
Son's age = 24 years
Man's age = 48 years
Step-by-step explanation:
Let's take the age of son as x
Man's age = 2x
Twelve years ago,
Son's age= x-12
Man's age= 2x-12
Man is three times as old as his son so,
Solving for x,
2x-12(1) = x-12(3)
2x-12 = 3x-36
2x-3x = -36+12
-x = - 24
x = 24
So if we substitute the values we get,
Son's age = 24 years
Man's age = 48 years
Hope you understand :)
Ответ:
Step-by-step explanation:
Let the present age of father be ' x ' years and that of the son be ' y ' years. From the first condition ,
x = 2y ••••••• equation ( i )From the second condition ,
x - 12 = 3 ( y - 12 ) ••••• equation ( ii )Substituting the value of x from equation ( i ) in equation ( ii ) :
Solve for y ( age of the son ) :
⟿![\sf{2y - 12 = 3y - 36}](/tpl/images/1024/0831/ad2bc.png)
⟿![\sf{2y - 3y = - 36 + 12}](/tpl/images/1024/0831/72dfd.png)
⟿![\sf{ - y = - 24}](/tpl/images/1024/0831/dde2e.png)
⟿![\sf{y = 24}](/tpl/images/1024/0831/e4589.png)
Now , Substituting the value of y in equation ( i ) , we get :
⟿![\sf{x = 48}](/tpl/images/1024/0831/1e8b1.png)
So, the present age of the father is 48 years and that of the son is 24 years.
Hope I helped ! ツ
Have a wonderful day / night ♡
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Ответ:
iSOCeles=socks are two and 2 are the same length
EQUALateral= all sides are =
Scalene= none are same