Find the cost of $700 7/2% debenture stock at 84?

To find the cost of $700 7/2% debenture stock at 84, you can use the formula:

Cost = Face Value * Rate * Percentage / 100

In this case, the face value is $700, the rate is 7/2%, which is 7/2 / 100 = 0.035, and the percentage is 84.

Substituting these values into the formula:

Cost = $700 * 0.035 * 84 / 100
Cost = $700 * 0.0294
Cost = $20.58

Therefore, the cost of the $700 7/2% debenture stock at 84 is approximately $20.58.