A runner's racecourse has a total distance of 10 mi. Race officials want to mark the course every 275 yd with a flag, including one at the finish line. (The starting line does not need a flag.) How many flags are needed?
First fill in the blanks on the left side of the equation using three of the ratios shown. Then write your answer on the right side of the equation.
ft
mi
yd
3 ft
Ratios:
5280 ft
1 mi
1 mi
5280 ft
275 yd
1 flag
1 flag
275 yd
1 yd
3 ft
1 yd
8
in
flag
5280 ft
10 mi
1
х
X
- flags
х
5
?
1 mi