53. To determine how to crash activity times a. normal activity costs and costs under maximum crashing must be known. b. shortest times with crashing must be known. c. realize that new paths may become critical. d. All of the alternatives are true.

D. All of the alternatives are true.

Explanation:

Crash activity time are been used in the in different organisations for different reasons. In the case, above the mentioned conditions in all options are been put to consideration. Because in its determination, one has to analyze thoroughly its critical path method in its first step; here the tasks are been shortened before being tackled. Secondly, you identify the newer critical ways in dealing of the things.

Also, normal activity costs and costs under maximum crashing are been made known. Therefore, all options above appear to be one of the steps in critical ways of determining crash activity time.

hi : ) i found this so i hope this !

"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"

answer; buying the bill at a discount from the face value to be received at maturity;