F=5 dollar bills
t=twent dollar bills
38 total bills
f+t=38
400 in bills
400=5f+20t
we have
f+t=38
5f+20t=400
multipy first equation by -5 and add to second equation
-5f-5t=-190
5f+20t=400 +
0f+15t=210
15t=210
divide both sides by 15
t=14
subsitute
t+f=38
15+f=38
f=23
23 five dolar bills
15 twenty dollar bills
percent means out of 100
35/100
divide the top and bottom by 5
7/20
Answer: 7 and half weeks
Step-by-step explanation:
The solution is in the attachment
1. Lamar sold 3 boxes of cookies.
2. Anna sold 4 boxes of cookies.
3. They each sold $24 worth of cookies.
Answer:
x=7
Step-by-step explanation:
because ther is 7 days in a week
