NEED A QUERY

I need help on below query.

 

Range (Inclusive of both values)	Grade
90-99	A
80-89	B
70-79	C
60-69	D
Below 60	E

DDL:

CREATE TABLE STUDENT
(
  STUDENT_NAME VARCHAR(10),
  MARKS INT,
  GRADE VARCHAR(10)
)
INSERT INTO STUDENT VALUES('Brad',92,'')
INSERT INTO STUDENT VALUES('Spence',73,'')
INSERT INTO STUDENT VALUES('Todd',52,'')
INSERT INTO STUDENT VALUES('Jesse',48,'')

SELECT * FROM STUDENT

Thanks: