Question

a truck and a bus started off at 10:30 a.m. form opposite end of a highway a truck travelled at a speed of 40 km per hour and the bus travel at a speed of 54 km per hour if they passed each other at 1:00. p.m. what was the length of the highway​

Answer 1

Answer:

Distance traveled by truck

speed = 40 km/h

time = 4.50 hour

$d = s \times t = 40 \times 4.5 = 180 \: km$

Distance traveled by bus

speed = 54 km/h

time = 4.50 hour

$d = s \times t = 54 \times 4.5 = 243\: km$

Total length of Highway,

D = 180 + 243 = 423 km

Answer 2

Answer:

235 km

Step-by-step explanation:

$speed \: of \: truck \: = 40 \: km \: per \: hr \\ speed \: of \: bus \: = 54 \: km \: per \: hr \\ time \: = 2hr \: 30 \: mint. \\ = 2 \times \frac{1}{2} \\ = \frac{5}{2} hrs \\distance \: travel \: by \: truck \: = 40 \times \frac{5}{2} = 100 \: km \\ distance \: travel \: by \: bus \: = 54 \times \frac{5}{2} = 135 \: km \\ total \: distance \: = 100 + 135 \\ = 235 \: km$