Select an (even) integer randomly from the set {0, 2, 4, 6, 8}. then select an integer randomly from the set {0, 1, 2, 3, 4}. le
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Answer:
Step-by-step explanation:
Let x be the number of quaters and y be the number of dimes Roberta has.
1. Quater is equal to 25 cents, then x quaters is equal to 25x cents. Dime is equal to 10 cents, then y dimes is equal to 10y cents. $4.00=400 cents, then
25x+10y=400.
2. Roberta has 5 more dimes than quarters, then
y=x+5.
3. The system of equations is
Substitute second equation into the first one:
10 quaters and 15 dimes