On Wednesday you drove from home to work at 65 mph and got there in 28 minutes. On Thursday you drove at 78 mph. Round answers to nearest 10th. Use: R1T1=R2T2 (double click this to see clearer)

Round to the nearest 10th and Use Unit Abbreviations for Units.

How long does the trip take on Thursday?

the distance is constant, so speed and time are inversely proportional

t / 28 = 65 / 78