How £100 a month might flip into £6,500 a 12 months in passive earnings

How a lot would a 45-year-old have to put money into an ISA to earn a £1k month-to-month passive revenue at 65?

How a lot would somebody want to take a position to earn £43,100 per 12 months in passive revenue?

This FTSE 100 firm appears undervalued to me

What are one of the best UK shares to purchase in July for progress and passive revenue?