Question 1202419
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x = number of ten dollar bills
x+293 = number of one dollar bills


1*(x+293) = x+293 = total value of all the $1 bills only
10x = total value of all the $10 bills only
(x+293)+(10x) = 11x+293 = total value in dollars of both type of bills combined


total = $2900
11x+293 = 2900
11x = 2900-293
11x = 2607
x = 2607/11
x = 237 is the number of $10 bills
x+293 = 530 is the number of $1 bills


Check:
A = 530 one dollar bills = 530*1 = $530
B = 237 ten dollar bills = 237*10 = $2370
A+B = $530+$2370 = $2900
Solution is verified.



Answer: 
<font color=red>530</font> one dollar bills
<font color=red>237</font> ten dollar bills
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