the product of ages of Ankit and Nikita is 240. if twice the age of Nikita is more than Ankit`s age by 4 years, then find Nikita`s age?
Answers
Answered by
1
Let the age of Ankit be x
And the age of Nikita be y
According to question,
Case 1
2y = x + 4
2y - 4 = x
Case2
x × y = 240
(2y - 4)y = 240
2y^2 - 4y - 240 = 0
2y^2 - 24y + 20y - 240 = 0
2y(y - 12) + 20(y - 12) = 0
(2y + 20)(y - 12) = 0
Y = 12
Now
X = 2y - 4 = 2 × 12 - 4 = 20
Answer.
The age of Ankit is 20 years
The age of Nikita is 12 years.
And the age of Nikita be y
According to question,
Case 1
2y = x + 4
2y - 4 = x
Case2
x × y = 240
(2y - 4)y = 240
2y^2 - 4y - 240 = 0
2y^2 - 24y + 20y - 240 = 0
2y(y - 12) + 20(y - 12) = 0
(2y + 20)(y - 12) = 0
Y = 12
Now
X = 2y - 4 = 2 × 12 - 4 = 20
Answer.
The age of Ankit is 20 years
The age of Nikita is 12 years.
21nikhildeo0456611:
you answer is right
Similar questions