math
posted by Aspyn .
Bridget surveyed some students at her school about their favorite classes. Of the students surveyed, 3 said Spanish was their favorite class, while 9 of the students had other favorite classes. If Bridget surveys 8 more students, how many of them should she expect to pick Spanish, based on past data?

math 
Ms. Sue
3/12 = x/20
Cross multiply and solve for x.
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