A fruit seller had some apples. He sells $40\%$ apples and still has $420$ apples. Originally, he had:

The monthly income of a person is $₹5000.$ If his income is increased by $30\%,$ then what is his monthly income now?

A man does not want to change his expenditure for the consumption of sugar. If the price of the sugar increases by $60\%,$ then the man must reduce his consumption by

Out of total population of $5000$ people in a village, the men increase by $10\%$ and the women by $15\%.$ Thus, the total population became $5600$ in a year. How many men were there in the village?

If the price of cooking gas increases by $15\%,$ by what percent should a family reduce its consumption so as not to exceed its budget on cooking gas?

A school sent $80$ candidates for an examination and the school result was $70\%$ pass. How many candidates should be detained so that the result becomes $80\%$ pass?