a student traveled 238km in 15 days. at the same ratio, how far would the student travel in 30 days?
we get 238 km in 15 days
30 days is 30/15 = 2 times that
so must be 2 * 238 = 476
30 days is 30/15 = 2 times that
so must be 2 * 238 = 476