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Bijoy patra
7y ago
The average of age of father and mother is 45 years. If the age of daughter is included. The average of the three falls to 35. Find the age of daughter ?
6
Vishnu Vardhan Radha 7y ago
the AVG. age of parents = (x+y/2)=45
x+y =90
given that (x+y+z/3)=35
x+y+z=105
WKT x+y=90
z=105-90=15
Mahesh Koiri 7y ago
35*3 -45*2= 105-90= 15 ans
Husen Kuranjekar 7y ago
15 years
Mahima 7y ago
15 years
Biswajit Maharana 7y ago
Avg of father and mother=45
here total sum=45×2=90
when daughter is included avg is 35
so after including ,the sum is= 35×3=105
so daughter age is=105 - 90=15
dharmender singh 7y ago
25
