He can go 3/5 of a mile in 1/4 of an hour. 1/2 of an hour is twice that of 1/4 of an hour so all you have to do is double the 3/5 3/5+3/5= 6/5 or 1 1/5 miles alternatively you can just multiply by two, 3/5*2/1=6/5 or 1 1/5 miles
This is a proportion problem. I would turn them into decimals to get the best result. 3/5= .6 1/4= .25 1/2= .5 Do the proportion .6/.25= x/.5 Cross multiply and divide .5 x .6= .3 .3 divide by .25= 1.2 Now turn this into a fraction. 1.2= 1 2/10 Now simplify Answer is 1 1/5
