Flor is putting a fence around a field. The field is rectangular and measures 9.84 yards (yd)long and 18.39 yd wide. How much fence must Flor purchase?
answer: 28.23 yd
Rainfall for the first 3 months of 2004 was recorded at 2.75, 1.97, and 1.59 inches(in). If the normal rainfall for that period is 7.04 in., by how much was the 2004 amount above or below normal?
answer: 6.31 in. below normal
Approximately 7 out of every 10 students at Sonia's college live on campus. The college has 6000 students. How many of them live on campus?
answer: 4200 students
In a shipment of 1200 parts, 60 were found to be defective. What percent of the parts were faulty?
In the first one, you have taken only half of the perimeter, you have to double your answer.
In the second you have totalled the rainfall sofar.
it says "how much was the 2004 amount above or below the normal" of 7.04
so 6.31 - 7.04 = -.73
So it was .73 in below normal.
third one is correct
fourth: 60/1200 = .05 or 5%