The figure shows a rectangular container measuring 21 cm by 30 cm by 39 cm. Tina poured 846 mℓ of water into the container. Then, she turned on two taps at the same time to fill up the container with water. Water was flowing from both taps at the same rate. After 10 minutes, both taps were turned off but 3.8 ℓ of water had overflowed and was collected in a tray. Find the rate of the flow of water of each tap in millilitres per minute.
Volume of the container
= 21 x 30 x 39
= 24570 cm³
= 24570 mℓ

Volume of the remaining space after water was poured in
= 24570 - 846
= 23724 mℓ 

1 ℓ = 1000 mℓ
3.8 ℓ = 3800 mℓ

Volume of water contributed by 2 taps
= 23724 + 3800
= 27524 mℓ

Volume of water contributed by 1 tap
= 27524 ÷ 2 
= 13762 mℓ 

Rate of flow per minute
= 13762 ÷ 10
= 1376.2 mℓ/min

Answer(s): 1376.2 mℓ/min