3/5 of a number is 30. What is the number?

10
20
es
18
15

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices