SOLUTION: : a car travels at a speed of 30 km/h for 30 minutes and then at a speed of 45 km/h . what is the total distance travelled by the car in 2 hours

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Question 877627: : a car travels at a speed of 30 km/h for 30 minutes and then at a speed of 45 km/h . what is the total distance travelled by the car in 2 hours
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The car travels at +45+ km/hr
for +2+-+.5+=+1.5+ hrs
+d%5B1%5D+=+45%2A1.5+
+d%5B1%5D+=+67.5+ km
-----------------------
+d%5B2%5D+=+30%2A.5+
+d%5B2%5D+=+15+ km
----------------------
+d%5B1%5D+%2B+d%5B2%5D+=+67.5+%2B+15+
+d%5B1%5D+%2B+d%5B2%5D+=+82.5+ km
The car travels 82.5 km in 2 hrs