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Byju's Answer
Standard IX
Mathematics
Logarithms
If #160; ...
Question
If
log
5
x
=
y
and
5
2
y
+
3
=
m
x
2
, then the value of
m
is equal to
A
100
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B
125
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C
70
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D
150
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Solution
The correct option is
B
125
log
5
x
=
y
....(Given)
∴
x
=
5
y
.....(1)
5
2
y
+
3
=
5
2
y
×
5
3
=
(
5
y
)
2
×
125
=
125
x
2
....(From 1)
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