RRB Junior Engineer Stage 1 Model Papers 4

Question : 29 of 99

Marks: +1, -0

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:

CP = (20 × 14 + 40 × 10)

⇒(280+400)=680

Profit = 25%

∵SP={(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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