Question

Which of these are examples of direct proportion?
(i) Cost price to grocery.
(ii) Time required in completing a work to the number of workers doing that work.
(iii) Distance covered and time taken to cover that distance when speed is constant.

• A. (i), (ii)
• B. (i),(ii),(iii)
• C. (i), (iii)
• D. (ii)

Answer 1

The correct option is C

(i), (iii)

(i) The cost price increases as the amount of grocery purchased increases and vice-versa.

(ii) Time required in completing a work is inversely proportional to the number of workers doing that work. If workers are more in number, then work can be done in less time and vice-versa.

(iii) If speed is constant, then as the distance covered increases, the time taken to cover that distance also increases and vice-versa.