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Kevin has $4.85 in nickels and dimes. If he has 34 fewer dimes than nickels, how many coins (nickels and dimes) does he have altogether?

 Jun 9, 2022
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Value of nickel  * number of nickels  +  Value of dime * number of dimes =   4.85

 

.05 *  (N)   +   .10 ( N - 34)  = 4.85

 

.05N  + .10N  - 3.4  = 4.85

 

.15N  = 4.85 + 3.4

 

.15N =  8.25

 

N = 8.25 / .15  =    55   = number of nickels

 

N - 34 =    55 - 34  =  21   =  number of dimes

 

 

cool cool cool

 Jun 9, 2022

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