A rectangular container measuring 88 cm by 51 cm by 28 cm was to be filled with water by two taps, F and G. Tap F which fills the tank at a rate of 5 ℓ per minute was first turned on for 4 minutes before Tap G was turned on as well. If the tank was filled to the brim in a total of 6 minutes from the time when Tap F was first turned on, what is the rate at which Tap G fills the tank? Give your answer in ℓ per minute correct to 1 decimal place.
Total volume of the container
= 88 x 51 x 28
= 125664 cm
3 1 ℓ = 1000 cm
3 5 ℓ = 5000 cm
3 Volume of water filled by Tap F
= 5000 x 6
= 30000 cm
3 Volume of water filled by Tap G
= 125664 - 30000
= 95664 cm
3 Rate in which Tap G fills the container
= 95664 ÷ 2
= 47832 cm3/min
47832 mℓ/min
= 47.832 ℓ/min
≈ 47.8 ℓ/min (Correct to 1 decimal place)
Answer(s): 47.8 ℓ/min