Two successive discounts of $4 \%$ on any item are equivalent to a single discount of $\%$

$A$ dealer sold a bicycle at a profit of $10 \%$. Had he bought the bicycle at $10 \%$ less price and sold it at a price $Rs. 60$ more,he would have gained $25 \%$. The cost price of the bicycle was:

Meenal purchased a car for $Rs. 2,50,000$ and sold it for $Rs. 3,48,000$. What is the percent profit she made on the car?

If the cost of $1$ banana is $Rs. 1.25$ and the cost of $1$ apple is $Rs. 1.75$,what will be the total cost of $2$ dozen bananas and $3$ dozen apples in $Rs.$?

$A$ person sells $36$ apples per rupee and suffers a loss of $4 \%$. Find how many apples per rupee should be sold to have a gain of $8 \%$.

$A$ trader sells rice at a profit of $5 \%$ and uses a weight which is $25 \%$ less. Find the total percentage gain.