A woman is seven times as old as her son. After 5 years, she will be four times as old as her son. What are the present ages of the mother and son?
Answers
Step-by-step explanation:
Answer:
Mother's present age = 35 years.
Son's present age = 5 years.
Explanation:
Given,
A woman is seven times as old her son.
Let's say her son's present age \boldsymbol xx yrs.
∴ Women's present age = \boldsymbol {7x}7x yrs.
Now,
After 5 years she'll be 4 times the age of her son.
5 years later,
Mother's age = \boldsymbol {7x + 5}7x+5 yrs.
Son's age = \boldsymbol {x + 5}x+5 yrs.
According to the question,
\implies \: 7x + 5 = 4 \times (x + 5)⟹7x+5=4×(x+5)
Solving for \boldsymbol xx
\implies \: 7x + 5 = 4x + 20⟹7x+5=4x+20
\implies \: 7x - 4x= 20 - 5⟹7x−4x=20−5
\implies \: 3x= 15⟹3x=15
\implies \: x= \dfrac{15}{3}⟹x=
3
15
\therefore \boldsymbol{ x= 5}∴x=5
Hence,
Son's present age = \boldsymbol xx = 5 years.
Mother's present age = \boldsymbol {7x}7x = 35 years.
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Answer:
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