make the ratio into direct proportion based on the given problem. several pieces of string ,60 cm long each are divided into one of the ratios.find the lengths of the two parts in each case. 1. 1:1=____ 2.2:1=____ 3. 3:1=____ 4. 4:1=_____ 5.5:1=____ 6. 2:3=___ 7.4:5=__ 8.10:15=___ 9. 3:2=___10.6:1=__