Camille's income is 40% less than Thibault's income, Kevin's income is 30% less than Camille's income, and Yann's income is 20% less than Camille's income. If Thibault gave 50% of his income to Kevin and 50% of his income to Yann, Kevin's new income would be what fraction of Yann's new income?

A rectangular park has a walking trail on its periphery. If the length of the park is 40 meter and the breadth is 23 meter, how much distance will a person cover if he takes 3 complete round(s) of the park?

Antoine's age is twice that of Pauline, Pauline's age is twice that of Matthieu and Matthieu's age is twice that of Erwan. If the average of the ages of Antoine, Pauline, Matthieu and Erwan is 15 years, then what is the present age of Matthieu?

A railway company makes a profit of € 1341 on per ticket of business class while loses € 156 on every ticket in economy class. If the company sold 2058 tickets of business class and 31945 tickets of economy class in the month of August, what would be the total profit or loss company will make in that month.