Sylvia ran 3km 290m in the morning then she ran some more in the evening if she ran a total of 10km how far did sylvia run in the evening

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

What is the prime factorization of 230