1900*4%
1900*0.04
76 (interest for a year)
76*3/4 (3/4 because 9 months is 3/4 of a year)
57 (9 months interest)
Margo will pay $57 in interest
Step-by-step explanation:
4a=2a+4
C.L.T
4a-2a=4
2a=4
=2