Reduce 10/20 i need i am not really good at reducing lol

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Someone me what is the area of this figure? 18m 18m 8m 16m