Question
PSLE
A tank was filled with 48 litre of water at 18 00. Water flowed out of the tank from 18 00 to 22 00. The line graph shows the amount of water in the tank from 18 00 to 22 00. During which one-hour period was the decrease in the volume of water the greatest? Give your answer in number. (Eg 1)

(1) 18 00 to 19 00
(2) 19 00 to 20 00
(3) 20 00 to 21 00
(4) 21 00 to 22 00 


1 m

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PSLE
A tank was filled with 48 litre of water at 18 00. Water flowed out of the tank from 18 00 to 22 00. The line graph shows the amount of water in the tank from 18 00 to 22 00. During which one-hour period was the decrease in the volume of water the greatest? Give your answer in number. (Eg 1)

(1) 18 00 to 19 00
(2) 19 00 to 20 00
(3) 20 00 to 21 00
(4) 21 00 to 22 00