Question

The single equivalent discount (in decimal form) of the trade discount 5/4/1 is:

A) 0.15
B) 0.2
C) 0.25
D) 0.3

Answer 1

The single equivalent discount for the trade discount series of 5/4/1 is calculated by converting each discount to its decimal form and using the formula for successive discounts. After the calculations, the equivalent discount is approximately 0.10, or 10%, which is not one of the options provided (A-D).

Step-by-step explanation:

The single equivalent discount of the trade discount series 5/4/1 can be calculated by converting each discount to its decimal form and then combining them to find the total single discount. First, we convert each discount to decimal form: 5% becomes 0.05, 4% becomes 0.04, and 1% becomes 0.01. Next, we calculate the combined effect of applying these discounts successively by using the formula for successive discounts:

Equivalent single discount = 1 - (1 - discount1) × (1 - discount2) × (1 - discount3)

Substitute the decimal values:

Equivalent single discount = 1 - (1 - 0.05) × (1 - 0.04) × (1 - 0.01)

Equivalent single discount = 1 - (0.95 × 0.96 × 0.99)

Equivalent single discount = 1 - 0.89712

Equivalent single discount = 0.10288

When we round this to two decimal places, we get approximately 0.10, which means the correct answer to the student's question is none of the options listed (A through D). The single equivalent discount in decimal form would be approximately 0.10, or 10%.

Answer 2

The availability of the map of IDs to the new versions of the sObject records in triggers is 4) Available in before update, after insert, and after update triggers.

Step-by-step explanation:

In Salesforce Apex Triggers:

Before Update Triggers: In these triggers, the map of IDs to the new versions of the sObject records is available before the records are updated in the database. Developers can access and manipulate the records before the changes are committed.

After Insert Triggers: After insert triggers are executed after records are inserted into the database. The map of IDs to the new versions of the sObject records is available in these triggers, allowing developers to work with the newly inserted records.

After Update Triggers: Similar to before update triggers, after update triggers provide access to the map of IDs to the new versions of the sObject records after the updates have been applied to the database.

Option 4 is the answer.