There are 42 people at a museum. two-thirds of them are children. how many children are at the museum?

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Hannah reads at a constant rate of 33 pages every 88 minutes. write an equation that shows the relationship between pp, the number of pages she reads, and mm, the number of minutes she spends reading.