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Answer 1

Step-by-step explanation:

Ratio of profit/loss= 1 : 1

total cost=1+1=2

As he's having same profit as well as same loss.

But price difference between the profit amount and loss amounts = 70-50= 20

so actual difference between profit and loss would be= 2×10= 20

and ratio becomes = 10 : 10

now CP = 50+10

=60

profit ℅ = profit/cp ×100

= 10/60×100

=50/3%

Answer 2

Answer:

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