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galina1969 [7]
3 years ago
14

A girl is twice as old as her brother and half as old as her dad. in 22 years, her brother will be half as old as his father. ho

w old is the daughter now?
Mathematics
1 answer:
Stolb23 [73]3 years ago
4 0
Let x be the age of the brother, then:

Now:
x = brother
2x = sister
4x = father

In 22 years:
(x+22) = brother
(4x+22) = father

4x+22 = 2(x+22)
4x+22 = 2x + 44
4x-2x = 44 - 22
2x = 22
x = 11 years old (brother now)

11*2=22 years old (sister now).
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