Question 1114362
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<font color=red>The answer is choice A.</font>


The system of equations is
d = g-3
d+g = 187


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Here's why: 


The statement "Desmond's score was 3 less than George’s score" means that whatever George gets, we subtract 3 from it to find out Desmond's score. 


So in terms of an equation we would have 
Desmond's Score = (George's Score) - 3


From here we replace "Desmond's Score" with the letter d, and likewise we replace "George's Score" with the letter g to get the first equation to be d = g-3
For example, if George gets 50, then Desmond would get
d = g-3
d = 50-3
d = 47
So Desmond got 47 if George got 50. 
The example fits with the description (that Desmond got 3 less than George)
This is why the first equation is d = g-3


The other statement that "Their combined scores totaled 187" simply means that adding the two scores (d and g) results in 187. So we know that the second equation is d+g = 187


The two equations d = g-3 and d+g = 187 form the system
d = g-3
d+g = 187
which leads us to the <font color=red>answer to be choice A</font>
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