Question

1)Ball pens were sold at a loss of 20%. if they had been sold at 70 rupees more, there would have been a gain of 3 1/3%(mixed fraction)
find cost price



2)Bhaskhar buys an estate for 34 lakh. he builds boundary walls around it at a cost of 2 lakh. he sells two fifth of it at a loss of 20% and one third of it at a gain of 25% . at what gain percent must he sell the reminder so as to make a profit of 5% on the whole .

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Answer 1

ANSWER

300 by taking cost price as x

Answer 2

Step-by-step explanation:

let cp of pen be X

loss of pen= 20%

so so of pen= 100-20/100*X

=80x/100

if the pen had sold 70 rupess

than sp of pen=80x/100+70

now sp of pen a gain of 10/3%=310/3*X/100

=310X/100

SO,

310X/100=80x/100+70

310x/100-80x/100=70

310x-80x/100=80

230x/100=70

X=7000/230