Okay, call the quantity of water each tank can hold, in kgs, x, y, and z, from smallest to largest. x+ y+ z= 500.

So z= x+ 150.The largest tank can hold 150 kgs more than the smallest tank.

2x instead of xIf each tank’s capacity were increased such that the smallest now holds twice as much

3y instead of y, the next thrice

4z instead of 4and the largest four times as much

2x+ 3y+ 4z= 1650. That, together with x+ y+ z= 500, and z= x+ 150 gives you three equations to solve for x, y, and z., the total capacity would be 1,650 kgs. How much can each tank hold presently?

Let their ages be x, y, and z, in years, from youngest to oldest. Now YOU set up the equations.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