m Rohan’s mother is 26 years older than him. The product of their ages (in years3 years from now will be 360. We would like to find Rohan’s present age About the author Clara
Answer: Let Rohan’s age = x Rohan’s mother age = x + 26 After 3 years Rohan’s age = x + 3 Rohan’s mother age = (x+26) + 3 = x + 29 Now, Product of ages after 3 years = 360 ( x + 3 ) ( x + 29 ) = 360 x ( x +29 ) + 3 ( x + 29 ) = 360 x² + 29x + 3x + 87 = 360 x² + 29x + 3x + 87 – 360 = 0 x² + 32x – 273 = 0 It is the form if ax² + bx + c = 0 When a = 1, b =32, c = -273 Hence, it is a quadratuc equation. Reply
Given :– Rohan’s mother is 26 years older than him. The product of their ages in years 3 years from now will be 360. To Find :– Rohan’s present age ? Solution :– Let us assume that, rohan present age is x years. so, → Rohan’s mother present age = (x + 26) years . then, → 3 years hence, rohan will be = (x + 3) years old. → years hence, Rohan’s mother will be = (x + 26 + 3) = (x + 29) years old. A/q, → (x + 3)(x + 29) = 360 → x² + 29x + 3x + 87 = 360 → x² + 32x – 273 = 0 → x² + 39x – 7x – 273 = 0 → x(x + 39) – 7(x + 39) = 0 → (x + 39)(x – 7) = 0 → x = (-39) and 7 since negative value is not possible. Therefore, Rohan’s Present age is 7 years. Learn more :- the average age of 30 students is 9 years if the age of their teacher is included it becomes 10 years ago the age of the… https://brainly.in/question/15081594 Reply
Answer:
Let Rohan’s age = x
Rohan’s mother age = x + 26
After 3 years
Rohan’s age = x + 3
Rohan’s mother age = (x+26) + 3 = x + 29
Now,
Product of ages after 3 years = 360
( x + 3 ) ( x + 29 ) = 360
x ( x +29 ) + 3 ( x + 29 ) = 360
x² + 29x + 3x + 87 = 360
x² + 29x + 3x + 87 – 360 = 0
x² + 32x – 273 = 0
It is the form if ax² + bx + c = 0
When a = 1, b =32, c = -273
Hence, it is a quadratuc equation.
Given :– Rohan’s mother is 26 years older than him. The product of their ages in years 3 years from now will be 360.
To Find :– Rohan’s present age ?
Solution :–
Let us assume that, rohan present age is x years.
so,
→ Rohan’s mother present age = (x + 26) years .
then,
→ 3 years hence, rohan will be = (x + 3) years old.
→ years hence, Rohan’s mother will be = (x + 26 + 3) = (x + 29) years old.
A/q,
→ (x + 3)(x + 29) = 360
→ x² + 29x + 3x + 87 = 360
→ x² + 32x – 273 = 0
→ x² + 39x – 7x – 273 = 0
→ x(x + 39) – 7(x + 39) = 0
→ (x + 39)(x – 7) = 0
→ x = (-39) and 7
since negative value is not possible.
Therefore, Rohan’s Present age is 7 years.
Learn more :-
the average age of 30 students is 9 years if the age of their teacher is included it becomes 10 years ago the age of the…
https://brainly.in/question/15081594