The sum of three consecutive multiples of 3 is 252. What is the greatest of the three numbers?

An item, originally priced at 595 pesos, is marked with a 25% discount. What is the sale price?

The length of a rectangle is 5 inches more than twice its width. If the perimeter of the rectangle is 70 inches, what is the length of the rectangle?

Conchita is 3 years older than Goryo. Four years from now, the sum of their ages will be 55. What is the present age of Conchita?

To make violet paint, a painter mixes red paint and blue paint in the ratio 4:3. If he will use 12 gallons of red paint, how much blue paint should he use?

Petra has 5 more 20-peso bills than 50-peso bills, which totals 1, 150 pesos. How many fifties does she have?

Alex can do a dynamic grading system in 10 days, while Franz can do the same job in 15 days. If both of them work together, how long will it take them to finish the job?

Two trains left the same station at the same time. One is traveling north at 55 mph, while the other train is traveling south at 60 mph. In how many hours will the trains be 345 miles apart?

Poncio invested his money at an account that pays 15% simple interest. If he earned an interest of 6000 pesos in two years, how much did he invest?