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Mathematics, 27.08.2019 18:50 rianna14

Aperson has 22 coins, all nickels and dimes, worth one dollar and 40 cents. if n is the number of nickels and d is the number of dimes, which system of equations could represent this problem?
n+d=1.40
0.05n+0.1d=22
n+d=22
n+d=1.40
n+d=22
0.05n+0.10d=1.40

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Aperson has 22 coins, all nickels and dimes, worth one dollar and 40 cents. if n is the number of ni...
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