It takes Faucet R 30 minutes to fill a container measuring 16 cm by 9 cm by 13 cm completely while it takes Faucet H only 30 minutes. How long will it take to completely fill the container with water if both faucets are turned on at the same time and 3 cubic cubes of edges 2 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 R to fill the container:

30 min → 1 tank
1 min → ¹₃₀ tank

Time taken by Faucet H to fill the container:
30 min → 1 tank
1 min → ¹₃₀ tank

Volume of the container
= 16 x 9 x 13
= 1872 cm³

Volume of 3 cubic cubes
= 3 x (2 x 2 x 2)
= 24 cm³

Time taken by Faucet R and Faucet H to fill a container:
1 min → ¹₃₀ + ¹₃₀ =²₃₀ = ¹₁₅ container

¹₁₅ container → 1 min
1 container → 1 ÷ ¹₁₅ = 1 x ¹⁵₁ = 15 min

Remaining volume of the container to be filled by both faucets 
= 1872 - 24
= 1848 cm³

Time taken to fill the container
= ¹⁸⁴⁸₁₈₇₂ x 15
= 14.807692307692
≈ 14.81 min

Answer(s): 14.81 min