1. In Luguru Academy, each lesson in lower primary and upper primary classes lasts 30 minutes and 40 minutes respectively. The first time the two bells ring at the same time, the pupils go out for a tea break if lessons of the whole school start at 8:30am. a) At what time does tea break start? b) How many upper primary lessons take place before break? 2. A bottle contained 6 litres of milk. Malimoto took of the remainder. How much milk remained in the bottle? 3. An irregular pentagon has the following four interior angles 110°, 108° 135°, and 152°. Determine the value of the exterior angle adjacent to the fifth interior angle. 4. A candidate scores 45, x and y percent in an interview, what is his average score?
