A merchant purchases a wrist watch for $Rs.\,450$ and fixes its list price in such a way that after allowing a discount of $10 \%,$ he earns a profit of $20 \%$. Then the list price (in rupees) of the wrist watch is
$500$
$600$
$750$
$800$
By selling an article for $Rs.\, 450,$ a man loses $10 \% .$ The gain or loss percent if he sells it for $Rs.\, 540$ is
A person sold a radio at a loss of $5 \% .$ Had he sold it for $Rs\, 210$ more, he would have gained $25 \%$. For what value should he sell it in order to gain $35 \% ?$
Two discounts of $40 \%$ and $20 \%$ equal to a single discount of $\%$?
The marked price of a bed is $Rs. 2400$ .The shopkeeper gives successive discounts of $10 \%$ and $X \%$ to customer. If the customer pays $Rs.\, 1836$ for's the bed then find the value of $X$ in $\%$?
A white goods dealer pays $10 \%$ custom duty on an i-phone that costs $Rs.\, 25000$ in $UK$. For how much should hemark it, if he desires to make a profit of $20 \%$ after giving a discount of $25 \%$ to the buyer? (in $Rs$)