True. 8*9=72 and 9*9=81. Original ratio is being multiplied by 9/9
<em>*Because of BODMAS, 1/2x=x/2.</em>
1/2x+3/4=1
1/2x+3/4=4/4
1/2x=4/4-3/4
1/2x=1/4
x/2=1/4
x=2/4
x=1/2
Answer:
125 adults
175 children
Step-by-step explanation:
3900=8c+20a
300=c+a
c=300-a
substitute
3900=8(300-a)+20a
reduce
3900=2400-8a+20a
1500=12a
a=125 adults
substitute for a
c=300-a
c=300-125
c=175 children
83 Cents = 2 Quarters, 1 Nickel, 4 Pennies.
Glad I Could Help, And Good Luck!
~AnonymousGiantsFan~
The dog food food will last for 16 days
16x8=128