The speed ratio of a and B is known to be 10:7. How many kilometers did they walk when they met?

The speed ratio of a and B is known to be 10:7. How many kilometers did they walk when they met?

255 × 1010 + 7 = 150 (km) 255 × 710 + 7 = 105 (km) a: when we met, a traveled 150 km and B 105 km

The distance between the two places is 280 kilometers. Two cars run from the two places and meet two hours later. It is known that the speed ratio of the two cars is 4:3. Find the speed of the two cars

280/2=140
4+3=7
140*4/7=80
140*3/7=60
So the speed of a is 80 kilometers
B's speed is 60 kilometers

The distance between the two places is 450 km. Vehicles a and B start from the two places at the same time and travel in opposite directions. After five hours, they meet. The speed ratio of vehicles a and B is 5:4
B what's the speed of the two cars?

If car a travels 5kkm per hour, car B travels 4kkm per hour
5k+4k=450/5
9k=90
k=1
5k=5*10=50
4k=4*10=40
A: car a travels 50 kilometers per hour, while car B travels 40 kilometers per hour

The distance between the two places is 450 kilometers. A and B cars leave from the two places at the same time and meet after 5 o'clock. If the speed ratio of a and B cars is 5:4, what is the speed of the two cars?

450/5=90
90/(5+4)=10
10X5=50
10X4=40