The bus traveled the distance from A and B at a speed of 80 km / h and the distance from B to C

The bus traveled the distance from A and B at a speed of 80 km / h and the distance from B to C at a speed of 60 km / h. How much time did the bus spend on the way if it is known that AB = 60 km. AC = 70km.

1. Using the formula T = S / V, we find the time during which the bus traveled the distance from A to B:

TAB = 60/80 = 0.75 (h).

2. Find the aircraft distance:

BC = AC – AB = 70 – 60 = 10 (km).

3. Let’s calculate the time that the bus spent on the way from B to C:

FA = 10/60 = 1/6 (h).

4. Let’s calculate the time for the entire journey from A to C:

T = TAB + FA = 0.75 + 1/6 = ¾ + 1/6 = (3 * 3 + 1 * 2) / 12 = (9 + 2) / 12 = 11/12 (h) or 55 min.

Answer: the bus took 55 minutes for the entire journey from A to C.