John paid $900 for a laptop at a discount of 10% at an electronics shop. He signed up as a member of the shop and enjoyed an additional 10% discount on top of the discounted price. What was the total discount John received for buying the laptop?

Question

(1) $190
(2) $180
(3) $100
(4) $90

Answer 1

The initial discount John received for buying the laptop was:

10% of $900 = $90

After becoming a member, John received an additional 10% discount on the discounted price:

10% of ($900 - $90) = $81

Therefore, the total discount John received was:

$90 + $81 = $171

Answer: (2) $180 (This is not one of the answer choices, but it is the closest answer based on the options provided.)