The average age of two boys and their father is greater than the average age of those two boys and their mother by 3 year. The average age of the four is 19 year. If the average age of the two boys be 5% year, then find the age of the father and mother
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Step-by-step explanation:
s1+s2+f/3=s1+s2+m/3+4
s1+s2+f/3=s1+s2+m+12/3
f=m+12
f+s1+s2+m/4=19=> f+12+m=76=>f+m=64=>2m+12=64=>2m=52=>m=26
s1+s2/2=6-> s1+s2=12
So f=26+12=38
ratio=f/m=38/26=19/13
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