total of ages now is 67 + 4 + 4 = 75
S=shelly
M= Michelle
Michelle is 3 yrs younger than Shelly so use S-3
S +M = 75
replace M with S-3 to get:
S +S-3=75
2S=78
s=39
So shelly is 39
Michelle is 3 years younger = 39-3 = 36
-4/3
Explanation: All parallel lines have the same slope
The greatest common factor of 135 225 and 270 is 135/225 = 3/5
hope you found this helpful ;)
18.5•40=740
40•1.5=60
60•5.5=330
740+330=1070
A: $1070
