Question

Which of the following quantities are in inverse
proportion? State the assumption made in each case.
(a) The number of pencils Farhan buys and the
total cost of the pencils.
(b) The number of taps filling a tank and the time
taken to fill the tank.
(c) The number of taps filling a tank and the time taken to fill the tank.
(d) The number of cattle to be fed and the amount of fodder.
(e) The number of cattle to be fed and the time taken to finish a certain amount of the fodder.​

Answer 1

A) The number of pencils Farhan buys directly affects the cost because the more the pencils are the more will be their cost .

B) In 1 hour the tank would fill 50 % from the 2 hour tap plus 20% from the 5 hour tap. Thus the tank fills at the rate of 70% per hour. The tank will be full at 100/70 hours. Just a bit short of 1.5 hours.

Answer 2

Step-by-step explanation:

the explanation is given above