Question

at oranges are bought in Rupees 1 and sell 10 oranges in Rupees 1 then what is the percentage loss​

Answer 1

there is no loss because selling price is more than cost price

Answer 2

8 oranges at=₹1

Let CP of 1 oranges=₹x

Means 8x=₹1

x=₹1/8

CP of 1 orange=₹1/8

Now

10 oranges at=₹1

Let SP of 1 orange=₹x

Means

10x=₹1

x=₹1/10

CP of 1 orange=1/8

SP of 1 orange=1/10

LOSs=CP-SP

1/8-1/10

5-4/40

=₹1/40

loss percentage

$loss \div \: cp \times 100 \\ \\ \frac{1}{40} \div \frac{1}{8} \times 100 \\ \\ \frac{1}{ \cancel{40}} \times \cancel 8 \times 100 \\ \\ \frac{1}{ \cancel5} \times \cancel{100} \\ \\ = 20\%$

$\boxed{\mathbf{\huge{Loss=20\%}}}$