The monthly salary of a teacher is $₹12,800$. If his annual increment is $3\%$, find his new salary after an year.

Amina buys a book for $₹275$ and sells it at a loss of $15\%$. How much does she sell it for?

In a public examination $90\%$ students passed and $8,800$ students failed. Hoe many students appeared and how many passed?

A basket contains $360$ pears. Due to poor weather conditions about $15\%$ pears got spoilt. Find the number of good pears.

$2\%$ commission on sale of a property equals $₹4,240$. What is the value of the property?

$₹6,000$ is borrowed at $8\%$ rate of interest per annum. Find the interest and the amount after $3$ years.

Divya borrows a sum of $₹1,200$ at a rate of $5\%$ per annum. After how many years does she pay back the money if the interest paid is $₹120$?

The ratio of $4 km$ to $1,800 m$ is:

The decimal $0.0625$ converted to percentage is: