Answer:
A minimum of 10 dimes and 11 quarters is what Alexandra will have
Step-by-step explanation:
Let
d = number of dimes
q = number of quarters
Since she has 21 coins altogether,
d + q = 21------------------------equation 1
- If these coins are worth $3.75 then
0.10 x d + 0.25 x q = 3.75
- which is 0.10d +.25q =3.75
--------------------------equation 2
where $.10 is the value of one dime and $.25 is the value of one quarter
make d the subject of formula from equation 1 d = 21 -q----------equation 3
insert it in equation 2
0.10d +0.25q =3.75
0.10(21-q) + 0.25q = 3.75
0.1(21)-0.1q+0.25q=3.75
2.1 +0.15q = 3.75
0.15q = 3.75-2.1 = 1.65
q = 1.65/0.15 =165/15 =11
- since we have the value of q insert in equation 3
d = 21 - q
d = 21-11
d = 10
Alexandra has 10 dimes and 11 quarters.
from my calculation i can see that the a minimum of 10 dimes and 11 quarters is what Alexandra will have
Answer:-25c+15b+5 ..add it up then boom you'll get your answer
Step-by-step explanation:
Usually, the more often it's compounded, the better. That's assuming that the percent is equal through all comparisons, however.
Answer:
Sales = n 
($x + $y)
Step-by-step explanation:
The basic simple sales equation is
Quantity Price = Sales
Here in the given question,
Total quantity of sales = n
Price = Cost + markup
(Markup refers to the profit added to cost)
Thus price = $x (cost) + $y (markup)
Sales = n ($x + $y)
Sales amount is the total amount received from sales of products, total quantity at some price provided.
There are many possibilities
11 dimes and 1 quarter
6 dimes and 3 quarters
1 dime and 6 quarters
Much more...
