A bank teller was asked to cash a check for $260 with three times as many one-dollar bills as five%26#039;s and half as many tens as five%26#039;s. What denominations of cash should the teller have given?
A bank teller was asked to cash a check for $260 with three times as many one-dollar bills as five%26#039;s and halfcredot siosse
x = 1%26#039;s
y = 5%26#039;s
z = 10%26#039;s
x = 3y; y = x/3
y = 2z; z = y/2
x = 6z; z = x/6
x + 5y + 10z = 260
x + 5x/3 + 10x/6 = 260
x + 10x/3 = 260
3x + 10x = 780
13x = 780
x = 780/13
x = 60
60 1%26#039;s, 20 5%26#039;s, 10 10%26#039;s
Check: 60 + (20 脳 5) + (10 脳 10) = 260
A bank teller was asked to cash a check for $260 with three times as many one-dollar bills as five%26#039;s and half
loan
x = number of fives
3x= number of ones
x/2 = number of tens
Now take the number of each bills multiplied by their value to get the equation to solve.
5(x)+(3x)+10(x/2) = 260
5x+3x+5x=260
13x=260
x=20
so putting that value into the expressions listed first:
number of fives = x = 20
number of ones = 3x = 3(20) =60
number of tens = x/2 = 20/2 = 10|||x=# ones
y=# fives
z=# tens
x=3y
y=2z (change this to z=y/2)
and
x+5y+10z=260
3y+5y+10(y/2)=260
8y+5y=260
y=20
x=3y=60
z=y/2=10
so ten $10 and twenty $5 and sixty $1
100+100+60=260, so it works
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