SOLUTION: Maria has 20 coins in her pocket, all nickels and dimes. The total value of the coins is $1.35. How many of each type of coin does she have in her pocket?
PLEASE I NEED HELP ASA
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PLEASE I NEED HELP ASA
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Question 502910: Maria has 20 coins in her pocket, all nickels and dimes. The total value of the coins is $1.35. How many of each type of coin does she have in her pocket?
PLEASE I NEED HELP ASAP
if you could help me show HOW you got to there that would be so helpful :)
THANK YOU!!! Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Maria has 20 coins in her pocket, all nickels and dimes.
The total value of the coins is $1.35. How many of each type of coin does she have in her pocket?
:
let n = no. of nickels
let d = no. or dimes
;
Write an equation for each statement:
"Maria has 20 coins in her pocket, all nickels and dimes."
n + d = 20
n = (20-d), use this form for substitution
:
"The total value of the coins is $1.35."
.05n + .10d = 1.35
From the 1st statement, substitute n with (20-d)
.05(20-d) + .10d = 1.35
1 - .05d + .10d = 1.35
.05d = 1.35 - 1
.05d = .35
d =
d = 7 dimes
:
You can find n, yourself, check that the total is 1.35
