Question
The present age of Vinay’s mother is three times the present age of Vinay. After 5 years, sum of their ages will be 70 years. Find their present ages.
Answer: Option B
:
B
Let Vinay’s present age bexThen, his mother’s present age=3x
After 5 years,Vinay’s age =x+5Vinay's mother’s age =3x+5
Sum of Vinay and Vinay's Mother's age after 5 years = 70
⇒x+5+3x+5=70⇒4x+10=70⇒4x=60⇒x=15⇒3x=45
∴Vinay’s age is 15 years and hismother’s age is 45 years.
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:
B
Let Vinay’s present age bexThen, his mother’s present age=3x
After 5 years,Vinay’s age =x+5Vinay's mother’s age =3x+5
Sum of Vinay and Vinay's Mother's age after 5 years = 70
⇒x+5+3x+5=70⇒4x+10=70⇒4x=60⇒x=15⇒3x=45
∴Vinay’s age is 15 years and hismother’s age is 45 years.
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