The volume of two cisterns 220m ^ 3, the capacity of one is three times less than the capacity

The volume of two cisterns 220m ^ 3, the capacity of one is three times less than the capacity of the second. Determine the capacity of each tank.

Option number 1

Let the volume of a small tank be equal to the variable a.

Then the volume of a large tank can be represented as 3a.

Since we know that their total volume is 220 m3, then we write down the equation and find out the capacity of each:

a + 3a = 220;

4a = 220;

a = 55;

3 * 55 = 165.

Answer: 55 m3 and 165 m3.

Option number 2.

Determine how many small tanks fit in the specified total volume:

1 + 3 = 4.

Then the volume is small:

220: 4 = 55.

Then the volume is large:

3 * 55 = 165.

Answer: 55 m3 and 165 m3.