Which of the following is in direct proportion?
(a) One side of a cuboid and its volume.
(b) Speed of a vehicle and the distance travelled in a fixed time interval.
(c) Change in weight and height among individuals.
(d) Number of pipes to fill a tank and the time required to fill the same tank.
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Answer:
b.
Step-by-step explanation:
As we know speed = Distance / Time
therefore, if the time interval is same then with the increase of speed the distance will also increase.
that means in same time we can cover more distance with high speed.
so, it is in Direct proportion.
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