500
If the roadhouse had a 10% discount sale on everything in the shop, how much would I end up paying for a large chocolate bar that was normally $3.00?
Since we take 10cents for each dollar, we take:
10 + 10 +10 = 30cents. Take the 30 cents from one of the dollars = 100 cents-30 cents = 70 cents.
Now $1 + $1 + 70 cents= $ 2.70
We pay $2.70 instead of $3.00