If the radius of a circle is increased by 50%, the perimeter of the circle will increase by

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?

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

Achyutaya opens a tea-shop by investing Rs. 25000. He spends 30% of this amount on furnishing and 20% of it on buying other essential materials for the shop. What amount remains with him to buy remaining materials for his shop?

A student obtained 17 marks out of 20 marks. Find his percentage of marks. 

(A) 85% 

(B) 80% 

(C) 83% 

(D) 82% 

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 the price of an article is increased by 33.33%, by what percent should its consumption be reduced so that expenditure on the product remains same? 

(A) 20% 

(B) 16.67% 

(C) 14.28% 

(D) 25%