This MB-920 practice question tests your understanding of describe dynamics 365 commerce. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Refer to the exhibit.
{
"ProductId": 12345,
"Price": 29.99,
"Currency": "USD",
"TaxGroup": "WA",
"TaxRate": 0.087,
"ItemType": "Physical"
}
Exhibit: A JSON snippet representing a product configuration in Dynamics 365 Commerce.Refer to the exhibit. A product has a tax group of 'WA' and a tax rate of 0.087. The price is set to 29.99. A customer in Washington state purchases this product. What will be the final price including tax?
Refer to the exhibit.
{
"ProductId": 12345,
"Price": 29.99,
"Currency": "USD",
"TaxGroup": "WA",
"TaxRate": 0.087,
"ItemType": "Physical"
}
Exhibit: A JSON snippet representing a product configuration in Dynamics 365 Commerce.$29.99
Why wrong: Does not include tax.
$32.59
Why wrong: Incorrect rounding.
$32.60
29.99 + (29.99 * 0.087) = 32.60.
$32.48
Why wrong: Uses wrong tax calculation.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
$32.60
Option C is correct because the final price including tax is calculated by adding the tax amount to the base price. The tax amount is $29.99 * 0.087 = $2.60913, which rounds to $2.61 (standard rounding to two decimal places). Adding this to $29.99 gives $32.60. Dynamics 365 Commerce applies tax rounding based on the system's tax calculation settings, typically rounding to the nearest cent.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
$29.99
Why it's wrong here
Does not include tax.
$32.59
Why it's wrong here
Incorrect rounding.
$32.60
Why this is correct
29.99 + (29.99 * 0.087) = 32.60.
Related concept
Read the scenario before looking for a memorised answer.
$32.48
Why it's wrong here
Uses wrong tax calculation.
Common exam traps
The trap here is that candidates often forget to round the tax amount to two decimal places before adding it to the price, leading them to choose $32.59 (truncation) instead of the correctly rounded $32.60.
Detailed technical explanation
In Dynamics 365 Commerce, tax calculation uses the tax rate and rounding rules defined in the tax setup for the jurisdiction. The system applies standard arithmetic rounding (round half up) to the tax amount before adding it to the price. This behavior is critical for accurate financial reporting and compliance with local tax laws, where even a one-cent discrepancy can cause audit issues.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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FAQ
Describe Dynamics 365 Commerce — This question tests Describe Dynamics 365 Commerce — Read the scenario before looking for a memorised answer..
The correct answer is: $32.60 — Option C is correct because the final price including tax is calculated by adding the tax amount to the base price. The tax amount is $29.99 * 0.087 = $2.60913, which rounds to $2.61 (standard rounding to two decimal places). Adding this to $29.99 gives $32.60. Dynamics 365 Commerce applies tax rounding based on the system's tax calculation settings, typically rounding to the nearest cent.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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