If ken saved $120 dollars and didn’t spend any of it, he would still have $120. (I don’t exactly know if the problems came up because all I can see is your question)
Answer:
he would need 7 boxes
Step-by-step explanation:
61/9= 6 with a remainder of 7 therefore instead of 6 boxes you would need 7 to put the rest of the laptops in
Setup
0.8x + 0.4y = 50
0.1x + 0.2y = 10 - Multiply by -2 and add
get
0.6x = 30
x = 50 mg compound A
.1 (50) + .2y = 10
5 + .2y = 10
.2y = 5
y = 25 mg compound B
(number of yellow marbles) / (overall number of marbles)
=
2/20
