To fill a tank measuring 40 cm by 50 cm by 28 cm completely, it takes Tap J 43 minutes while it takes Tap K only 43 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 7 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 
= 40 x 50 x 28
= 56000 cm³
= 56000 mℓ

Volume of 7 containers
= 16 x 16 x 16 x 7
= 28672 cm³ 
= 28672 mℓ

Remaining volume to be filled by the Tap J and Tap K 
= 56000 - 28672
= 27328 mℓ
= 27328 cm³

Fraction of the tank to be filled
= ²⁷³²⁸₅₆₀₀₀
= ⁶¹₁₂₅

Tap J:
1 tank → 43 min
1 min → ¹₄₃ tank

Tap K:
1 tank → 43 min
1 min → ¹₄₃ tank

Tap J and Tap K:
1 min → ¹₄₃ + ¹₄₃ = ¹₄₃ + ¹₄₃ = ²₄₃ tank

1 tank = ⁴³₂ min

⁶¹₁₂₅ tank = ⁴³₂ x ⁶¹₁₂₅ = ²⁶²³₂₅₀ = 10.492

Answer(s): 10.49 min