Pre Algebra: Using Ratios to Create Proportions

1. On a map of Los Angeles, a distance of 3 miles is represented by 1.5 centimeters. If San Pedro is 24 miles from downtown Los Angeles, how many centimeters away is it on the map?

(A) 36
(B) 12
(C) 15
(D) 30
(E) 39

2. A pen factory can make 3200 pens per hour. At this rate, in how many minutes can the factory make 4800 pens?

(A) 45
(B) 100
(C) 1.5
(D) 15
(E) 90

3. Sunny is remodeling his house. He has 3100 square feet of walls and ceilings that need to be painted. If a five gallon bucket of paint will cover 275 square feet, how many buckets of paint does Sunny need to apply one coat to the surface?

(A) 56
(B) 12
(C) 57
(D) 11
(E) 13

4. On a large map of the East Coast, a distance of 4 miles is represented by 80 millimeters. If Baltimore is 38 miles from Washington D.C., how many centimeters away is it on the map?