Answer:
Step-by-step explanation:
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Answer:
Total amount Silas and Raja has at first = $252
Step-by-step explanation:
Let, 
Amount Silas had = x 
Amount Raja had = y 
According to given statement;
x = 3y       Eqn 1 
x-84 = y+42     Eqn 2 
Putting value of x from Eqn 1 in Eqn 2 
3y - 84 = y+42 
3y-y = 42+84 
2y = 126
Dividing both sides by 2 

Putting y = 63 in Eqn 1 
x = 63(3) 
x = 189
Total amount they had = 189 + 63 = $252
Hence, 
Total amount Silas and Raja has at first = $252