I have two questions:

1. Three tanks can hold 500 kgs of water. The largest tank can hold 150 kgs more than the smallest tank. If each tank’s capacity were increased such that the smallest now holds twice as much, the next thrice and the largest four times as much, the total capacity would be 1,650 kgs. How much can each tank hold presently?

2. Three men have ages which add up to 95 years. The eldest is 15 years older than the youngest. In 10 years, the youngest will be 5 years younger than the next man. How old is each now?

For the above questions we need to formulate the mathematical equations derived and solve the resulting equation by Cramer’s rule