ellycleland16
09.06.2020 •
Mathematics
Peggy had four times as many quarters as nickels. She had $2.10 in all. How many nickels and how many quarters did she have? If the variable n represents the number of nickels, then which of the following expressions represents the number of quarters?
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Ответ:
Step-by-step explanation:
If n represents the number of nickels, and the number of quarters is 4 times the number of nickels, then the number of quarters is represented by 4n.
The total value of the coins in cents is ...
5(n) +25(4n) = 210
105n = 210 . . . . . . . . collect terms
n = 210/105 = 2 . . . . number of nickels
4n = 4(2) = 8 . . . . . . number of quarters
Peggy has 2 nickels and 8 quarters.
Ответ: