The avg. age of a and b is 21 years.the ratio of their ages is 4:3 respectively. what is giri's age
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Equations:
(w + d)/2 = 21 yrs
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w = 5*d
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Substitute and solve for "d":
(5d+d)/2 = 21
6d = 42
daughter's age = 7 yrs
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Mother's age is 5*d = 35 yrs
-----
Ratio in 5 years = ?
daughter will be 12
Mother will be 41
(w + d)/2 = 21 yrs
----
w = 5*d
===================
Substitute and solve for "d":
(5d+d)/2 = 21
6d = 42
daughter's age = 7 yrs
-------------------------
Mother's age is 5*d = 35 yrs
-----
Ratio in 5 years = ?
daughter will be 12
Mother will be 41
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