a man sold a tape recorder at a gain of 8% the gain would have been 10% If the tape recorder had been sold for Rs 35 more find the cost price of tape recorder. please answer fast
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Answer : 1750
Solution :
let cp=x
10% of x = 8% of x + 35
(1/10)x = (2/25)x + 35
(1/10 - 2/25) x = 35
x = 35*50
= 1750
To cross check :
8% of 1750 = 140
10% of 1750= 175
so, if he had sold for 175 instead of 140 i.e. 35 rupees more, gain will be 10%
Solution :
let cp=x
10% of x = 8% of x + 35
(1/10)x = (2/25)x + 35
(1/10 - 2/25) x = 35
x = 35*50
= 1750
To cross check :
8% of 1750 = 140
10% of 1750= 175
so, if he had sold for 175 instead of 140 i.e. 35 rupees more, gain will be 10%
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