fozzzy wrote:

At a certain restaurant, if each hamburger costs the same amount, what is the cost, excluding sales tax, of 1 hamburger?

(1) The total cost, including a 6 percent sales tax, is $4.77 for 3 hamburgers.

(2) The total cost, including a 6 percent sales tax, is less than $6.50 for 4 hamburgers.

Don't have OA

Please provided detailed explanations confused in how to form equations for this question.

let cost of one Ham. is c

form (1) => 3*c + 3*c*.06 = 4.77 => this gives the value of c.

from (2) = > 6*c + 6*c*.06 < 6.5 => does not give a unique value

therefor condition(1) alone is suffice.

Hence, my ans is "a"