Well, there are 100 pennies in a dollar, and 10 dimes in a dollar. So, the ratio could be 10:100, or 1:10.
Answer:
Rate=9.05%
Step-by-step explanation:
Let P represent the Principal ,t the time = 8 years and r be the rate of interest.
It is given money doubles in 8 years so A=2P.
The compound interest is given by the formula :
Substituting the values we have:
Dividing both sides by P :
1.0905-1=r
r=0.09050
r=9.05%
The rate of
Glenn in finishing a job would be equivalent to:
Rate (G) = 1
job / 20 minutes
While the
rate of Veronika is:
<span>Rate (V) = 1
job / x ---> x is the
unknown</span>
Where 1 job
for Glenn means completely cleaning his room while 1 job for Veronika means
pulling out everything. Therefore the equation to use would be:
1 / 20 – 1 /
x = 1 / 60
The rate of
Veronika is subtracted from the rate of Glenn since Veronika is slowing Glenn
down. Solving for x:
Multiply both
sides by 60 x
(1 / 20 – 1 /
x = 1 / 60) * 60 x
3 x – 60 = x
2 x = 60
x = 30
<span>Therefore it
takes 30 minutes for Veronika to pull everything out.</span>
