There are 5 fifths in one bulletin board
therefore in 3 boards there are 3*5 = 15 fifths.
1 board 2 3
| _ _ _ _ _ | _ _ _ _ _ | _ _ _ _ _ |
5 5 5
Answer: = (the third option)
Step-by-step explanation
That system has D. no solutions
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13.50 per set
+.45 per day value
she got 20 sets
5 days after would be
13.50 ×20=270
value of 20 sets at 13.50 a set on day one was 270.00
.45×20=9.00
the 20 sets gain 9 dollars a day
9×5=45
9 dollars a day times 5 days is 45 dollars
45+270=315
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