30/12=in 1 min you drive 2.5lap
120/48=in 1 min you drive 2.5lap
yes they are equivalant
If they are equivalent, you should be able to cross multiply and get a true statement.
12/30 = 48/120
12(120) = 30(48)
1440 = 1440
This is a true statement, therefore they ARE equivalent.
