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UPSC CDS Math Percentage Questions
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Question : 11
Total: 31
A fruit seller has a certain number of mangoes of which 5% are rotten. He sells 75% of the remainder and he is left with 95 mangoes. How many mangoes did he have originally ?
[2017 CDS-II]
500
450
400
350
Validate
Solution:
Let the number of mangoes he had originally be n.
Therefore, number of non-rotten mangoes
=
95
100
n
Number of mangoes remaining after selling 75% of non-rotten mangoes
=
(
1
−
75
100
)
×
95
100
n
=
25
100
×
95
100
n
∴
25
100
×
95
100
n
=
95
⇒
n
=
400
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