Question

help needed 30 points. pls provide steps

Answer 1

let m=points for museums, b=points for libraries. then 11m+4b=179. we also have that m=4+b

11m+4b=179
11(4+b)+4b=179
44+11b+4b=179
15b=135
b=9
m=4+9=13
museums are 13 points while libraries are 9