If you are given two circles and told that the ratio of the radii of the circles is 4:11, then what will you say if asked the ratio of the areas of the two circles?

Niall wants to print some brochures for his business. If he goes for one style, it will cost him €160 plus €0.15 per brochure. If he goes for the other style, it will cost him €20 plus €0.5 per brochure. For how many brochures will the price for both styles be the same?

A railway company makes a profit of € 1325 on per ticket of business class while loses € 108 on every ticket in economy class. If the company sold 2330 tickets of business class and 41226 tickets of economy class in the month of January, what would be the total profit or loss company will make in that month.