A Russian 10 kopek coin is worth about $0.003 - one third of a US Cent.
50 Kopeks would be worth about $0.017 - or 1 cent rounded down.
Don't spend it all at once!
It's worth $50.
It's still worth $50.
It's still worth exactly $50.
Most are worth VERY little- $10-$50
It's currently worth about $10.
Assuming that you are referring to US coins, it does not seem to be possible, even if obsolete denominations are allowed, to use five different denominations of coins to make exactly 50 cents. I am not aware of any other countries that use "cents" that would allow you to do so either. However, in Czarist Russia, and in the Soviet Union, there were coins in the denominations (among others) of 2, 3, 10, 15 and 20 kopeks, the total of which 5 coins would be 50 kopeks.
$10-$50
$50 Billion dollars.
Less than 50 cents.
10-200 usd
Depending on their race from 10 to 50 dollars.
10-50 usd