I'm pretty sure he saved $27. I just divided 90 by 20 to get the amount of times he would have saved 6 dollars. Then, I multiplied that number, 4.5, times 6 to get the amount he saved. Hope that helps (and that it's correct lol). <span />
        
             
        
        
        
Answer:
I would help answer but there is no equation
Step-by-step explanation:
 
        
             
        
        
        
I think boys =18
          girls=12
boys :x
girls:y
student:z
the number of group for the boys :n
the numberof group for the girls :m
so x=(3/5)*z
    y=(2/5)* z
x/y=3/2
3y-2x=0
(1/10)*z*n=(3/5) *z
so n=6
(1/5)*z*m=(2/5)* z
put x=(1/10)*z*6
    y=(1/5)*z*2
 into 3y-2x=0 and z=30
 z=30 so x=(1/10)*30*6=18
               y=(1/5)*30*2=12
        
             
        
        
        
Answer: The answer would be 60%
 
        
             
        
        
        
The total interest accrued is $2,407.41 if you invested $7,000 into a money market account for 10 years at an annual interest rate of 3%. 
<h3>What is invested amount?</h3>
An investment is a payment made to acquire the securities of other firms with the intention of making a profit.
 
We are assuming the interest will be compounded annually

Where A = Final amount
           P = Principal amount
           r  = annual rate of interest
           n = how many times interest is compounded per year
           t = How long the money is deposited or borrowed (in years)
 
We have:
P = $7000
r = 3% = 0.03
t = 10 years
n = 1

After calculating:
A = $9407.41
I = A - P = 9407.41 - 7000 = $2,407.41
Thus, the total interest accrued is $2,407.41 if you invested $7,000 into a money market account for 10 years at an annual interest rate of 3%. 
Learn more about the invested amount here:
brainly.com/question/16995381
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