It takes Faucet V 20 minutes to fill a tank measuring 16 cm by 11 cm by 12 cm completely while it takes Faucet G only 30 minutes. How long will it take to completely fill the tank with water if both faucets are turned on at the same time and 6 cubic cubes of edges 2 cm, filled with water, are poured into the tank? Leave the answer in minutes and round off to 2 decimal places.
Time taken by Faucet V to fill the tank:

20 min → 1 tank
1 min → ¹₂₀ tank

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

Volume of the tank
= 16 x 11 x 12
= 2112 cm³

Volume of 6 cubic cubes
= 6 x (2 x 2 x 2)
= 48 cm³

Time taken by Faucet V and Faucet G to fill a tank:
1 min → ¹₂₀ + ¹₃₀ =⁵₆₀ = ¹₁₂ tank

¹₁₂ tank → 1 min
1 tank → 1 ÷ ¹₁₂ = 1 x ¹²₁ = 12 min

Remaining volume of the tank to be filled by both faucets 
= 2112 - 48
= 2064 cm³

Time taken to fill the tank
= ²⁰⁶⁴₂₁₁₂ x 12
= 11.727272727273
≈ 11.73 min

Answer(s): 11.73 min