A and B set out from ab at the same time. When they met, a walked more than 7 kilometers, then a traveled 2 hours to B, and B traveled 4.5 hours to a to find the distance between ab

A and B set out from ab at the same time. When they met, a walked more than 7 kilometers, then a traveled 2 hours to B, and B traveled 4.5 hours to a to find the distance between ab


Let a speed be x km / h and B speed be y km / h
4.5y=2x+7
((2x+7)/x)*y=2x
The solution is x = 7
The distance is 4x + 7 = 35km



Party A and Party B go from a to B at the same time. Party A goes back to B first and meets Party B immediately. At this time, Party A walks 7.4 kilometers, 0.8 kilometers more than Party B
How many kilometers are there between a and B


A. B distance between two places: 7.4-0.8 △ 2 = 7 (km)



A. The distance between B and a is 1.8km. A and B start from a and B at the same time and walk towards each other. A rides a bicycle at a speed of 12km / h, and B walks. After 6 minutes, they meet to find the speed of B


Let B's speed be XKM / h. from the meaning of the question, we can get: 660 × 12 + 660 × x = 1.8. From the solution, we can get: x = 6km / h. answer: B's speed is 6km / h



A and B ride bicycles from two places 65 kilometers apart at the same time. They meet two hours later. If a rides 2.5 kilometers more per hour than B, then B's speed is______ Km / h


Let B ride x kilometers per hour, and a ride (x + 2.5) kilometers per hour. From the equation: (x + X + 2.5) × 2 = 65, the solution is: x = 15, so fill in 15