The numbers for July 30, 2013: 30 for 30

30 percent

Researchers at Yale have found 30 percent of mothers have difficulty affording diapers, a family staple which is largely left out of government assistance programs. (CBS News)

30 years

Three duets between Freddie Mercury and Michael Jackson recorded in 1983 are set to be released this fall, two years after producers secured access from the Jackson estate. (Hollywood Reporter)

30 minutes

What’s wrong with finishing a game of Monopoly in 30 minutes? Nothing, according to Hasbro. To condense the game from a meal to a snack, the toymaker eliminated jail. (Marketplace)

20 for 30

The older you get, the wiser you get? Maybe. But here’s 20 tips 20-somethings can give to 30-somethings. (Marketplace)