It takes 3 years for the balance of account to be $ 221
<em><u>Solution:</u></em>
From given information,
Principal = $ 200
Rate of interest = 3.5 %
Amount after "n" years = $ 221
To find: number of years
In simple Interest,
Simple interest = amount earned - principal
Simple interest = 221 - 200 = 21
Thus simple interest earned is $ 21
<em><u>The formula for simple interest is given as:</u></em>

Where,
p is the principal
n is the number of years
r is the rate of interest per annum
Substituting the given values in formula,

Thus it takes 3 years for the balance of account to be $ 221
 
        
             
        
        
        
Just simplify them to a decimal by dividing the numerator by the denominator. 
        
             
        
        
        
The absolute value of -200 is 200
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
x+2/2x=3/2
2x×3=2x+4
6x=2x+4
4x=4
x=4/4
x=1
 
        
             
        
        
        
Answer:
40 ¢ 
0Step-by-step explanation: 25 + 10 + 5 = 40