[Solved] You are designing a system that applies multiple discounts: a 10% seasonal discount and a... If the original price is $50, what is the correct final price after applying both discounts sequentially? | LLD

LLD - Design — Online Shopping Cart

You are designing a system that applies multiple discounts: a 10% seasonal discount and a $5 coupon. If the original price is $50, what is the correct final price after applying both discounts sequentially?

A$40.5

B$45

C$40

D$42

Step-by-Step Solution

Solution:

Step 1: Apply the $5 coupon discount first
$50 - $5 = $45.
Step 2: Apply the 10% seasonal discount
$45 * 0.9 = $40.5.
Step 3: Sequential discounts
Coupon before percentage discount yields $40.5.
Final Answer:
$40.5 -> Option A
Quick Check:
Coupon then percentage = 40.5 [OK]

Quick Trick: Order of discounts affects final price [OK]

Common Mistakes:

MISTAKES

Applying discounts in wrong order
Adding discounts instead of subtracting
Ignoring percentage vs fixed discount difference

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More LLD Quizzes

If the original price is $50, what is the correct final price after applying both discounts sequentially?

Step 1: Apply the $5 coupon discount first

Step 2: Apply the 10% seasonal discount

Step 3: Sequential discounts

Final Answer:

Quick Check:

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