Question

b) The cost of a material is decreasing at the rate of 3 per day.
i. What will be the total change in the value after 4 days?
ii. In how many days the total change in the value becomes (-24)?​

Answer 1

Answer:

what is the cost of material ?????

Answer 2

Answer:

(i) 12

(ii) 8 days

Step-by-step explanation:

(i) In 1 day, change in value is at the rate of 3

   In 4 days, change in value is at the rate of (4 X 3) = 12

(ii) Change in value of -3 occurs in 1 day

    Change in value of -1 occurs in $-\frac{1}{3}$ day

    Change in value of -24 occurs in $-\frac{1}{3}$ x -24 days

                                                            = 8 days