SOLUTION: sara has 1.45 in nickels and dimes. there are 18 coins in all. how many of each are there? use the five step method and a table in solving this problem.
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-> SOLUTION: sara has 1.45 in nickels and dimes. there are 18 coins in all. how many of each are there? use the five step method and a table in solving this problem.
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Question 337422: sara has 1.45 in nickels and dimes. there are 18 coins in all. how many of each are there? use the five step method and a table in solving this problem. Answer by benazir.sj@gmail.com(109) (Show Source):
You can put this solution on YOUR website! nickels =N
dimes =D
total number of coins =18
N+D=18
N=18-D -----------(1)
total nickels and dime is 1.45
5N+10D = 145 --------------(2)
substitue the value of N in(2)
5(18-D)+10D= 145
5*18 -5D +10D =145
90 +5D=145
5D=145-90
5D=55
D=11
N+D=18
N+11+18
N=7
there are 7 nickels and 11 dimes
Proof:
5N+10D=145
5*7 +10*11=145
35+110=145
145=145
