Question

Sunitha and her brother Bharat studying in the same school. Sunitha walks to the school while Bharat cycles to the school.So, Sunitha has to leave an hour before Bharat to reach the school on time.now answer these questions:
1.whose speed is greater?
2.if Sunitha wants to reach school in 3hours at what speed should she walk?
3.if we draw the graph which graph line has a greater slope?

Answer 1

1-bharat's speed is greater.
2-her speed should be 3times less than her regular speed to go to school
3-suniya graph line would have a greater slope

Answer 2

The answers are as follows:

(1) Bharat's speed is greater.

-It is because he takes less time than Sunitha to reach the school.

(2) Sunitha should walk at one-third speed of her original speed.

- She took 1 hour at her normal speed.

- So to reach in 3 hour, her speed should be 1/3 of her original speed.

(3) Bharat's graph line will have greater slope.

- Both of them travel the same distance to school.

- If we plot a distance -time graph, Bharat will have greater slope as he takes less time to cover same distance as shown in the attached figure.