Jenny's mom says she has an hour before it's bedtime jenny's friends one third of the our texting a friend and 1/4 of time brushing their teeth and putting on her pajamas she spends the rest of your time reading her book how many minutes did jenny read?

According to Jenny's mom, she only have an hour before bedtime
=> 1/3 of her time were spent for texting her friend
=> 1/4 of her time were spent brushing her teeth and putting on her pajamas.
Now, he still have to read her book. How much time will she be spending for reading books?
=> 1/3 + 1/4 = 4/12 + 3/12, 12 is the least common multiple
=> 4/12 + 3/12 = 7/12
12/12 - 7/12 = 4/12
=> 4/12 = 19.8 minutes
=> 3/12 = 15 minutes
=> 4/12 =19.8 minutes
He still

AB║CD

let a & b be length of parallel sides distance between them is h.

area of trapezium =

1/2 ah + 1/2 bh = 1/2 h ( a + b )

hope this answer helps you