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? n/4 n 4n n + 4

C. 4n.

Peggy had 2 nickels and 8 quarters.

Step-by-step explanation:

Let n represent number of nickels.

We have been given that Peggy had four times as many quarters as nickels. We can represent this information in an equation as:

.

We are also told that she had $2.10 in all. We can represent this information in an equation as:

Therefore, Peggy had 2 nickels.

Therefore, Peggy had 8 quarters.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

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