When two cars a and B set out from their colleagues in AB and met each other, car a traveled 60% of the whole journey, more than 60 kilometers. The distance of car B was equivalent to 3 / 1 of that of car a

When two cars a and B set out from their colleagues in AB and met each other, car a traveled 60% of the whole journey, more than 60 kilometers. The distance of car B was equivalent to 3 / 1 of that of car a

The distance is x km
(60%X+60)+1/3*(60%X+60)=X
X=400
You are wrong about "3 / 1 of a"

A and B start from AB and meet at 60 km away from the midpoint to find the distance between AB and ab

60÷【1/2-11/（11+15）】
=60÷【1/2-11/26】
=60÷1/13
=780km

A and B vehicles run from AB to each other at the same time. A vehicle travels 40 kilometers per hour. After 3 hours, it meets 15 kilometers from the midpoint. How far is the distance between AB and a?
Write down all possible situations

(40 * 3 + 15) * 2 = 270 km

A and B start from AB and meet at 60km away from the midpoint to find the distance from ab

Party B takes 1 ÷ (1 + 11 / 15) = 15 / 26 of the whole journey
AB distance 60 △ 15 / 26-1 / 2 = 60 △ 1 / 13 = 780km