<h3>T
he total money earned by Rita on Monday   = $158</h3>
Step-by-step explanation:
The rate by which  Rita is paid first 8 hours  = $16
The next per hour rate after 8 hours = 
 times the usual rate.
Now, 1.5 times $16 = 1.5 x 1 6 =  $24
So, for each hour worked after 8th hour, Rita is paid $24 per hour.
Now, the intervals she has worked are:
(a) from 8:15  to 12: 45 pm
So, the number of hours worked  =  45 minutes + 45 minutes  + 3 hours   
= 4 hours 30 minutes  .... (1)   (as 60 minutes = 1 hour)
(b) break of 45 minutes after 12: 45  = 12: 45 + 45 minutes  
= 12 hour 90 minutes  = 1 :  30 P M
So, she started working at 1: 30 and worked till 6: 15
So, the number of hours worked  =  30 minutes + 15 minutes  +4 hours   
= 4 hours 45 minutes  .... (2)   
So, by adding (1) and (2) the total hours worked by Rita  
= 4 hours 30 minutes + 4 hours 45 minutes    
= 8 hours  75 minutes  = 9 hours 15 minutes
9 hours  15 minutes   = ( 8 +  1 .25 )     ( 15 minutes = 0.25 of an hour)
So, the payment is ( 8 x (16) +  1.25 (24) )  
= 128 +  30  = 158
Hence, the total money earned by Rita  = $158