Question
PSLE
A tank contained 41 litres of water at 18 00. A tap was turned on and water flowed into 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 increase 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 


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PSLE
A tank contained 41 litres of water at 18 00. A tap was turned on and water flowed into 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 increase 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