It takes Faucet K 15 minutes to fill a container measuring 19 cm by 9 cm by 11 cm completely while it takes Faucet Y only 10 minutes. How long will it take to completely fill the container with water if both faucets are turned on at the same time and 4 cubic cubes of edges 4 cm, filled with water, are poured into the container? Leave the answer in minutes and round off to 2 decimal places.
Time taken by Faucet K to fill the container:

15 min → 1 tank
1 min → ¹₁₅ tank

Time taken by Faucet Y to fill the container:
10 min → 1 tank
1 min → ¹₁₀ tank

Volume of the container
= 19 x 9 x 11
= 1881 cm³

Volume of 4 cubic cubes
= 4 x (4 x 4 x 4)
= 256 cm³

Time taken by Faucet K and Faucet Y to fill a container:
1 min → ¹₁₅ + ¹₁₀ =⁵₃₀ = ¹₆ container

¹₆ container → 1 min
1 container → 1 ÷ ¹₆ = 1 x ⁶₁ = 6 min

Remaining volume of the container to be filled by both faucets 
= 1881 - 256
= 1625 cm³

Time taken to fill the container
= ¹⁶²⁵₁₈₈₁ x 6
= 5.1834130781499
≈ 5.18 min

Answer(s): 5.18 min