how to set up proportions?
for example ''Mrs. Stearns need to photocopy a 9.5 cm wide by 16 cm long picture. She wants to enlarge the picture so its length is 40 cm. How wide will the picture be?'' i need help on these kind of problems i will be getting a tutor soon so watch out. and please help me online with my homework because i might get kicked out of my upper level [above grade level] math class so please help me! i greatly appreciate all your help!!!