A man bought $60$ Oranges at the rate of $₹20$ for $6$ And sold them at $₹15$ for $4$. Find his total gain or loss.

Find the gain or loss percent when,

$\mathrm{CP}=₹300$ and profit $=₹75$

Find the gain or loss percent when,

$\mathrm{SP}=₹540$ and gain $=₹60$

Find the gain or loss percent when,

$\mathrm{SP}=₹1518$ and Loss $=₹132$

Find the gain or loss percent when,

$\mathrm{CP}=₹720$ and gain $=₹54$

Find the gain or loss percent when,

$\mathrm{CP}=₹250$ and $\mathrm{SP}$$=₹235$

Find the gain or loss percent when,

$\mathrm{CP}=₹300$ and $\mathrm{SP}$$=₹420$