To fill a tank measuring 50 cm by 30 cm by 48 cm completely, it takes Tap Z 46 minutes while it takes Tap A only 30 minutes. How long will it take to completely fill the container with water if both the taps are turned on at the same time and 6 cubic containers of edges 16 cm, filled to the brim with water are poured into the tank? Leave your answer in minutes and round off to 2 decimal places.
Volume of the tank 
= 50 x 30 x 48
= 72000 cm³
= 72000 mℓ

Volume of 6 containers
= 16 x 16 x 16 x 6
= 24576 cm³ 
= 24576 mℓ

Remaining volume to be filled by the Tap Z and Tap A 
= 72000 - 24576
= 47424 mℓ
= 47424 cm³

Fraction of the tank to be filled
= ⁴⁷⁴²⁴₇₂₀₀₀
= ²⁴⁷₃₇₅

Tap Z:
1 tank → 46 min
1 min → ¹₄₆ tank

Tap A:
1 tank → 30 min
1 min → ¹₃₀ tank

Tap Z and Tap A:
1 min → ¹₄₆ + ¹₃₀ = ¹⁵₆₉₀ + ²³₆₉₀ = ¹⁹₃₄₅ tank

1 tank = ³⁴⁵₁₉ min

²⁴⁷₃₇₅ tank = ³⁴⁵₁₉ x ²⁴⁷₃₇₅ = ²⁹⁹₂₅ = 11.96

Answer(s): 11.96 min