There is a long-distance bus running at a fixed speed between city a and city B. if the speed is 6 kilometers per hour faster than the original speed, it can arrive 20 minutes earlier. If the speed is 5 kilometers per hour slower than the original speed, it will be 24 minutes late. How many kilometers is the distance between city a and city B?

There is a long-distance bus running at a fixed speed between city a and city B. if the speed is 6 kilometers per hour faster than the original speed, it can arrive 20 minutes earlier. If the speed is 5 kilometers per hour slower than the original speed, it will be 24 minutes late. How many kilometers is the distance between city a and city B?

Describe directly with equation. For OKL, suppose the original speed V, the original time t, then the distance vt
Now (V + 6) (T-20) = vt-20v + 6t-120 = VT 6T = 20V + 120
(V-5)(T+24)=VT VT+24V-5T-120=VT 5T=24V-120
Two equations, two unknowns, easy to find, right