the product of ramu s ages 5 years ago is and his age 9 years later is 15.find his age?
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Answered by
15
Let ramu age be = x years
According to Q's:
(X-5) * (x+9) = 15
=> x^2+4x-45= 15
=> x^2+4x-60= 0
=> x^2+10x-6x-60=0
=> x(x+10)-6(x+10)=0
=> (x-6)(x+10)=0
Answer will be age of ramu x=6 years
Answered by
20
☆ Hey! ☆
let assume ramu age be x
then= the linear equation formation for this:
⇒(x-5) * (x+9) = 15
⇒x²+4x-45= 15
⇒x²+4x-60=0
⇒ x(x+10)-6(x+10)=0
⇒ (x-6)(x+10)=0
⇒x=6
hence, it is proved that ramu's age is 6 years.
let assume ramu age be x
then= the linear equation formation for this:
⇒(x-5) * (x+9) = 15
⇒x²+4x-45= 15
⇒x²+4x-60=0
⇒ x(x+10)-6(x+10)=0
⇒ (x-6)(x+10)=0
⇒x=6
hence, it is proved that ramu's age is 6 years.
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