PROBLEM 1. In a mathematics competition, 30 exercises are proposed. For each correctly solved exercise, the student receives 10 points, and for each incorrectly solved exercise, the student is penalized with 10 points (10 points are deducted). Dragoş solved all the exercises and received 80 points.

a) How many exercises did Dragoş solve correctly?

b) How many exercises did Dragoş solve incorrectly?

c) How many more exercises would Dragoş have needed to solve correctly to end up with 120 points?

d) What was the maximum score that could be obtained at the mathematics competition?
## PROBLEM 1.

$(2 p) \quad$ a) Dragoş solved 19 exercises correctly;

$(2 p) \quad$ b) Dragoş solved 11 exercises incorrectly;

$(2 p) \quad$ c) To obtain 120 points, Dragoş would have needed to solve 2 more exercises correctly;

(1p) d) The maximum score that could be obtained is $10 \times 30=300$ (points).