Question

The quantity of water in a tank is decreasing at a constant rate through out the time due to outflow of water. Draw a line diagram depicting the course of the remaining water over time and select the same from the given option as there is no inflow of water.

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

The quantity of water in the tank will decrease over time as it empties.

As a result, the quantity of water will be decreasing with time.

Therefore, Option (b) or (c) may be the correct response.

The rate of decrease is considered to be constant.

The rate of loss of amount in option (b) is not constant, i.e., the quantity decreases more in some time intervals than in others.

As a result, Option (c) is the correct answer.

Here, the quantity decreases at the same rate at each interval, i.e., a constant rate of decrease in quantity."
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