Answer:
On which topic is he making?
Answer:
Step-by-step explanation:
$13.33= 2/3
so $20- 13.33= $6.67
Write the situation as a simultaneous eqution:
x+y=87
10x+5y=545
Now solve for y by multiplying the whole of the first equation by the coefficient of x:
10x+10y=870
10x+5y=545
5y=325
y=65 nickels in the box
x+y=87
x=22 dimes in the box
To prove this is correct, we do (10 x 22)+(5 x 65)=545 cents ($5.45)