There are r classes in a school and there are a total of 108 persons in the school. If there are equal number of students in each class and there are 12 classes in the school. Find the number of students in each class.
You have to sent a message on the post office. the message must have 108 characters in total. you have to use 12 words in that message. what is the maximum length (the number of characters in each) of the words you have to use it to use only 12 words, and use 108 characters in total?
