Question 720861
D+W=612
D=612-W
.09W+.08D=54.27
.09W+.08(612-W)=54.27
.09W+48.96-.08W=54.27
.01W=54.27-48.96
.01W=5.31
W=5.31/.01
W=531 MINUTES USED DURING THE WEEKEND?
D+531=612
D=612-531
D=81 MINUTES USED DURING THE WEEKDAYS?
PROOF:
.09*531+.08*81=54.27
47.79+6.40=54.27
54.27=54.27