How much is $100 pesos in $1?

Could you please clarify the question for me? Are you asking how much the equivalent of $100 pesos is in US dollars? If so, it's important to note that the exchange rate between pesos and US dollars can vary depending on the country whose currency you're referring to. For example, the Mexican peso has a different exchange rate than the Argentine peso. Assuming you're asking about the Mexican peso, the exchange rate can fluctuate daily. However, let's say for the sake of this question that the current exchange rate is roughly 20 Mexican pesos to 1 US dollar. Using that rate, $100 Mexican pesos would be equivalent to approximately $5 US dollars. Again, it's important to remember that exchange rates can change frequently, so the most accurate answer would be to check the current exchange rate at the time of your inquiry.