A shopkeeper borrow some rice  at 10 Rs. per kg and 100 kg rice at 11 Rs. per kg mix both type of rice and sell at the rate of 12 Rs. per kg and get profit of 300 Rs. How much rice mix the rate of 10 Rs. per kg ?

Current salary of Kriti is 4800. There will be increase of 15% in it in next year, what  will be the increased salary of Kriti after increment?

There are $1500$ students in a school, $15\%$ are Muslims, $7\%$ are Sikhs, $8\%$ are Christians and remaining are Hindus. How many Hindu students are there in the school?

If $15\% of (x + y) = 45\% of (x - y)$, then $y$ is how much percent of $x$?

A small scale soap business has the following expenses: 10% on marketing, 65% on employees salary and 25% on raw materials. If the business pays a total salary of Rs. 65,000 then what is its marketing expense?