The difference between two numbers is 5 and there numbers difference between 1/10 . Than what is the number
Answers
Required numbers are 5, 10
Explanation:
It is given that, difference of two natural numbers is 5
Let the x, (x+5) are two natural numbers.
Reciprocals of the numbers are
x and 1/(x+5)
According to the problem given,
\frac{1}{x}-\frac{1}{x+5}=\frac{1}{10}
\implies \frac{x+5-x}{x(x+5)}=\frac{1}{10}
\implies \frac{x}{x^{2}+5x}=\frac{1}{5}
Do the cross multiplication, we get
\implies 50=x^{2}+5x
=> x²+5x-50=0
Splitting the middle term, we get
=> x²+10x-5x-50=0
=> x(x+10)-5(x+10)=0
=>(x+10)(x-5)=0
=> x+10 = 0 Or x-5=0
=> x = -10 Or x = 5
But the two numbers are natural numbers.
x = 5
Therefore,
Required two natural numbers are,
x = 5
and
x+5 = 5+5 = 10
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Hello Buddy ✌
Step-by-step explanation:
⇒1/x-5 – 1/x = 1/10
⇒x - (x-5)/x - (x-5) = 1/10
⇒5/x - (x-5) = 1/10
⇒ x(x-5) = 50
⇒ x2 - 5x - 50 = 0
⇒ x2 - 10x + 5x - 50 = 0
⇒ x (x - 10) + 5 (x - 10) = 0
⇒ (x+5) (x-10) = 0
⇒ (x+5) (x-10) = 0
⇒ x = -5 or 10
⇒ x = 10 (x = -5 , rejected)
∴ Two numbers are 10 and (10-5) = 5.