Question

A person sold 2 articles for Rs.7000. On 15
he gained 20 % and on 2nd he lost 15 %. Find
the cost price of 1st article, if on whole there
was no profit and no loss.
a) Rs.3000
b) Rs.4000
c) Rs.3500
d) None​

Answer 1

Cost Price of 1st Article = Rs 3000  , If Two articles sold or Rs 7000 , one with 20% gain and 2nd with 15% loss. in Whole no profit , no loss

Step-by-step explanation:

A person sold 2 articles for Rs.7000

=> selling Price of both = Rs 7000

on whole there was no profit and no loss.

=> Cost Price of Both = Rs 7000

Cost Price of 1st  = C

Then Cost Price of 2nd = 7000 - C

Gain on 1st  = (20/100)C = 0.2C

Loss on 2nd = (15/100)(7000 - C) = 1050 - 0.15C

Loss = Gain

0.2C  = 1050 - 0.15C

=> 0.35C = 1050

=> C = 3000

Cost Price of 1st Article = Rs 3000

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Answer 2

Answer:

Rs. 2500 Tk

Step-by-step explanation:

let,

2nd article sold = x

1st article sold = 7000-x

A/C:

(120/100)*(7000-x) + (85x/100) =7000

x = 4000

The sold price of 1st article = 3000

Then,

The cost price of 1st article = 3000*(5/6)=2500

Ans : 2500