Answer:
this is late but 1176?
Step-by-step explanation:
Lt1 = 45; Lt2 = 120; Lt3 = 75
:
Prime factor each:
45: 3,3,5,
120: 2,2,2,3,5
75: 3,5,5
:
Lcm of all three: 2,2,2,3,3,5,5 Multiply this: 1800 secs they will all Flash
:
1800/60 = 30 min: At 9:05Pm this should occur
Okay. So, all we have to do is divide 19.5 by 3.25 (3 1/4). 19.5/3.25 is 6. Barbara’s hourly rate is $6.
