$A$ man spends $15 \%$ of his income. If his expenditure is $Rs$ $75,$ his income (in rupees) is:

The price of a table depreciates every year by $20 \%$. If the value of the table after $2$ years is $Rs$ $32,000$,then what is the present price (in $Rs$) of the table (in $,000$)?

The daily wage is increased by $25 \%$ and a person now gets $₹ 25$ per day. What was his daily wage before the increase?

Amit donated $20\%$ of his income to a school and deposited $20\%$ of the remainder in his bank. If he has $₹ 12800$ now,what is the income (in $₹$) of Amit?

The product of one-third of a number and $150 \%$ of another number is what percent of the product of the given numbers?

What percentage of numbers from $1$ to $70$ have squares that end in the digit $1$?