A tank was completely filled with water at 6.00 a.m. Water flowed out of the tank from 6.00 a.m. to 10.00 a.m.. The line graph shows the volume of water in the tank at each 1-hour interval from 6.00 a.m. to 10.00 a.m. At what time was 910 of the tank filled with water? Give your answer in 24-h clock. (Eg 1.00 p.m.)
Total volume of the tank when it was completely filled with water = 200 ℓ
910 of the tank filled with water
=
910 x 200
= 180 ℓ
Time when
910 of the tank was filled with water = 7.00 a.m.
Answer(s): 7.00 a.m.