It takes Faucet Z 30 minutes to fill a container measuring 18 cm by 11 cm by 14 cm completely while it takes Faucet H only 15 minutes. How long will it take to completely fill the container with water if both faucets are turned on at the same time and 6 cubic cubes of edges 5 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 Z to fill the container:

30 min → 1 tank
1 min → ¹₃₀ tank

Time taken by Faucet H to fill the container:
15 min → 1 tank
1 min → ¹₁₅ tank

Volume of the container
= 18 x 11 x 14
= 2772 cm³

Volume of 6 cubic cubes
= 6 x (5 x 5 x 5)
= 750 cm³

Time taken by Faucet Z and Faucet H to fill a container:
1 min → ¹₃₀ + ¹₁₅ =³₃₀ = ¹₁₀ container

¹₁₀ container → 1 min
1 container → 1 ÷ ¹₁₀ = 1 x ¹⁰₁ = 10 min

Remaining volume of the container to be filled by both faucets 
= 2772 - 750
= 2022 cm³

Time taken to fill the container
= ²⁰²²₂₇₇₂ x 10
= 7.2943722943723
≈ 7.29 min

Answer(s): 7.29 min