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Byju's Answer
Standard VII
Mathematics
Integers
The sum of a ...
Question
The sum of a number and its reciprocal is
17
/
4
. The number is ____________.
A
5
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B
4
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C
6
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D
3
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Solution
The correct option is
A
4
Let the number be
x
Given Sum of a number and its reciprocal is
17
/
4
⟹
x
+
1
x
=
17
4
⟹
x
2
+
1
x
=
17
4
⟹
4
x
2
+
4
=
17
x
⟹
4
x
2
−
16
x
−
x
+
4
=
0
⟹
4
x
(
x
−
4
)
−
(
x
−
4
)
=
0
⟹
(
4
x
−
1
)
(
x
−
4
)
=
0
⟹
x
=
1
4
,
4
So the number is
4
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Q.
The sum of a number and its reciprocal is 17/4. Find the number.