Asked by kola

the present age of a father and his son are in the ratio 10:3. if the son is 15 years old now, in how many years will the ratio of their age be 2:1?
Answered by Reiny
present:
father --- 10x
son -------3x

3x = 15
x = 5
son is now 15 and father is now 50

in t years,
(50+t)/(15+t) = 2/1
30+2t = 50+t
t = 20

<b>in 20 years</b> , the father will be 70 and the son will be 35
(which is in the ratio of 2:1 )
Answered by Frontman
The arithmetic mean of x y and z is 6 while x y z t u v and w is 9 calculate the arithmetic mean of t u v and w.
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