A shopkeeper sells notebooks at the rate of $Rs.\, 45$ each and earns a commission of $4 \% .$ He also sells pencil box at the rate of $Rs.\, 80$ each and earns a commission of $20 \% .$ How much amount of commission will he earn in two weeks if he sells $10$ notebooks and $6$ pencil boxes a day? (in $Rs.$)

A plate was sold for $Rs.\,6,300$ after giving two successive discounts of $12^{1 / 2} \%$ and $10 \% .$ Find the marked price. (in $Rs.$)

$20 \%$ loss on selling price is what per cent loss on the cost price? (in $\%$)

A shopkeeper purchased $150$ identical pieces of furniture at the rate of $Rs.\, 250$ each. He spent an amount of $Rs.\, 2500$ on packing. He fixed the price of each each furniture at $Rs.\, 320$. However, he decided fe give a discount of $5 \%$ on the labeled price. What is the percent profit earned by him?

Rita buys an article for $Rs.$ $9600.$ She sold it at $12 \%$ loss and get some money and from that money she again buys an article and this time she got $12 \%$ profit. What was profit or loss she got form this transaction in $Rs.$?

If the selling price of $40$ articles is equal to the cost price of $50$ articles, the loss or gain percent is