A bus drove at a speed of 45 km/h for the first half of the journey. Thereafter,the speed of the bus was 35 km/h for the rest of the Journey. Find the percentage decrease in the speed of the bus
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Answer:
Let the total distance travelled be x km Then total time taken =
10
x/3
+
20
x/3
+
60
x/3
=
30
x
+
60
x
+
180
x
=
180
6x+3x+x
=
180
10x
=
18
x
hrs Then average speed = =
Totaltimetaken
Totaldistancetravelled
=
x/18
x
km/hr = 18 km/hr
Step-by-step explanation:
get it through this hint
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