Consumer Surplus

Suppose a consumer would be willing to pay $6 for the first cup of coffee of the day, $5 for the second cup, $4 for the third cup and $3 for the fourth cup, $2 for the fifth cup...

If the price of a cup of coffee is $3 per cup, how many cups will the consumer buy in a day?___________________

On the first cup, this consumer earns $3 in "surplus" because she is willing to pay $6 but only pay $3 for the cup

What surplus is earned on the 2^nd cup?________________

...the third cup? ___________________

...the fourth cup? __________________

Given that cups are only being consumed in who # units, what is the total surplus this consumer earns on her purchase of 4 cups of coffee per day? ___________________