1. the product of tanay's age (in years)five years ago and his age(in years) ten years later is 16. Determine tanay's present age....
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Answered by
3
Let tanay's present age be x yrs
five yrs ago tanay's age = x-5
ten yrs later tanay's age =x+10
according to the question.,
=(x-5)(x+10)=16
=x^2 +10x-5x-50=16
=x^2+5x-66=0
=x^2+11x-6x-66=0
=x (x+11)-6 (x+11)=0
=(x-6)(x+11)=0
=x=6 or x=-11
since age is positive tanay's present age =6yrs
Hope it helps
Answered by
11
Answer:
hlo..
Step-by-step explanation:
Let the present age of Tanay be x years.
Then, from the given information, we have:
(x - 5) (x + 10) = 16
x2 + 5x - 50 = 16
x2 + 5x - 66 = 0
x2 - 6x +11x - 66 = 0
x(x - 6) +11(x - 6) =0
(x - 6)(x +11) = 0
x = -11 or 6
Rejecting x = -11, as age cannot be negative.
Present age of Tanay is 6 years
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