Question

Which of the following are in inverse proportion?

• A. The population of a country and the area of land per person.
• B. The time taken for a fixed journey and the speed of the vehicle.
• C. Area of cultivated land and the crop harvested.
• D. The time taken for a journey and the distance travelled in a uniform speed.

Answer 1

Answer: (A), (B)

The correct options are
A

The population of a country and the area of land per person.

B

The time taken for a fixed journey and the speed of the vehicle.

(i) Time and distance covered are in direct proportion.
(ii) It is a case of direct proportion because more the land , more crop can be harvested.
(iii) Time and speed are in inverse proportion because less the speed , more time will be taken
(iv) It is a case of inverse proportion. If the population of a country increases, the area of land per person decreases.