Answer:the distance if the whole trip is 280 miles
Step-by-step explanation:
Let x represent the distance of the whole trip.
Jordans family is on a road tirp. So far they have travelled 3/7 of the total distance. This means that the distance that they have travelled so far is
3/7 × x = 3x/7
They have travelled 120 miles so far. This means that
3x/7 = 120
Multiplying both sides if the equation by 7, it becomes
3x/7 × 7 = 120 × 7
3x = 840
Dividing both sides of the equation by 3, it becomes
3x/3 = 840/3
x = 280 miles
