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RRB Junior Engineer Stage 1 Model Papers 4
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© examsnet.com
Question : 29
Total: 99
A merchant buys 20 kgs of a variety of rice at ₹14 per kg and another 40 kgs of rice at ₹10 per kg. He mixes them and sells 1/3 of the mixture at ₹12.50 per kg. At what rate should be sell the remaining mixture so as to earn a profit of 25% on the whole outlay?
₹12/-
₹15/-
₹12.50/-
₹13/-
Validate
Solution:
C
P
=
(
20
×
14
+
40
×
10
)
⇒
(
280
+
400
)
=
680
Profit = 25%
∵
S
P
=
(
100
+
25
)
×
680
100
=
850
∵SP of
1
3
part of mixture
20
×
12.5
=
250
∴ SP of remaining mixture
=
(
850
−
250
)
=
600
∴ SP of remaining mixture per kg
=
600
40
=
15
per kg
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