How is 0.9 the simplification to 90/100

The fraction 90/100 is equivalent 1 to 9/10.The fraction 90/100 This is a PROPER FRACTION once the absolute value of the top number or numerator ( 90) is smaller than the absolute value of the bottom number or denominator (100) 
This fraction 90/100 is equal to 90÷100 and can also be expressed in decimal  form as 0.9

The academic affairs council is the highest expert body processing academic affairs, as stipulated by the university statutes. specialist aaro häkkinen (educational policy) took part in the council’s meeting. the agenda of the meeting included bachelors’ feedback, the timing of pedagogical studies, the grant system for tuition fees, the standardisation of administrative practices for internships and the situation of foreign-language and multilingual master’s programmes.