Katrina rode her bicycle 
km in the morning and 
km in the evening. Find the distance travelled by her altogether on that day.
Bicycle travelled by Katrina in the morning = 
km
Bicycle travelled by Katrina in the evening = 
km
Now, total distance travelled by Katrina = distance travelled in the morning + distance travelled in the evening
Total distance travelled = 
∴ total distance travelled by Katrina is 
km.
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