Answer: x/y=1
Step-by-step explanation:
a(x-y)=b(y-x)
(a+b)x=(a+b)y
x/y=1 ans
hope this helps
Answer:
The rational number equivalent to 3.24 repeating is 321/99
Step-by-step explanation:
To convert the decimal number to a rational number we can state this number and its multiples of 10, trying to find two number with identical decimal parts:
n=3.24242424...
10n=32.4242424....
100n=324.2424242...
Now, 100n and n have the same decimal part, then by subtracting these numbers we obtain:
100n-n=324.24242424...-3.24242424... = 321
99n = 321
n = 321/99
He sold 12 coins, 16+28+32+4=80. 15% of 80 is 12
