A man sells each of his $2$ articles for $Rs.$ $99.$ On one he gains $10 \%$ and on the other he incurred a loss of $1 \%$ in the entire transaction. What is his total gain in $\%$?

Surbhi bought a combined total of $25$ i-pads and i-phones. She marked up the i-pad by $20 \%$ on the cost price, while each i-phone was marked up by $Rs.\, 2000.$ She was able to sell $75 \%$ of the i-pads and $2$ i-phones and make a profit of $Rs.$ $49000 .$ The remaining i-pads and $3$ i-phones could not be sold by her. Find her overall profit or loss if she gets no return on unsold items and it is known that an i-phone costs $50 \%$ of an i-pad.

A trader mixes $26\, kg$ of rice at $Rs.\, 20$ per $kg$ with $30\, kg$ of rice of another variety at $Rs.\, 36$ per $kg$ and sells the mixture at $Rs$ $30$ per $kg.$ His profit percent is

Aditya bought a scooter for a certain sum of Money. He spend $15 \%$ of cost price on repair and sold it for a profit on $Rs.$ $1104.$ What will he spend on repair if profit he got was $20 \%$ in $Rs.?$

If a vendor sells a coconut at $Rs.\, 14.4$ he makes $10 \%$ Ioss. If he wants to make $25 \%$ profit, there at what price (in $Rs.$) should he sell?

A men gains $20 \%$ by selling an article for a certain price. If he sells it at double the price, what will be the percentage of profit?