4 Math questions!
posted by Alyssa Martinez on .
Can you help me with a few math questions please?
1)You are running in a race. It takes you 25 minutes to go 2.7 miles.
a.If you continue at this same rate, how long will it take you to go 6 miles?
b.What is your rate in miles per hour?
2)If the scale factor of a map is 1/8” is 12 miles. How far apart are two towns if they are 3 inches apart on the map?
3)12 is 36% of what number?
4)A sweater that originally costs $15 is on sale for $12. What is the percent decrease in the price?

1a.
25/2.7 = x/6
Cross multiply and solve for x.
1b.
25/2.7 = 60/x
2. Use a proportion to find the answer.
3.
0.36x = 12
4.
100(3/15) = _______% 
what is the unit rate for 2 miles in 12 minutes then how long would it take her to run 5 miles at the same rate?