Question

karan bought a few kg of rice at rs.60 per kg.and an equal quantity for rs.30 per kg.if he mixes both kinds of rice together and sells at rs.70 per kg.find his gain% or loss%​

Answer 1

Step-by-step explanation:

Find the avg cp. : (60+30)/2

45.

Selling price is :70/kg

Cost price is :45/kg

Definitely gain % i.e

So . gain: 70-45=25

gain % =25/45×100

Ans : 55.55 %

Answer 2

ãńšwêř

$cp = (60 + 30) \: by \: 2 \\ 90 \: by \: 2 = 45 \\ sp = 70kg \\ cp = 45kg \\ since \\ gain = 70 - 45 \\ = 25 \\ gain \: prcnt \: \\ = 25 \: by \: 45 \: \times 100 \\ = 55.56 \: ans$

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