10 times
<h3>
Further explanation</h3>
<u>The Problem:</u>
- While swimming a 2 km race, Adam changes from breaststroke to a butterfly every 200 m.
- How many times does he switch strokes during the race?
<u>The Process:</u>
Firstly, we must equate length units in meters. Let us convert the race distance unit.
Recall that
Then,
Thus, the race distance is 2,000 m.
Secondly, we calculate how many times does he switch strokes during the race.
Adam changes from breaststroke to a butterfly every 200 m. Let us divide the race distance with the distance of every change.
Or it could be like this:
Thus, Adam switched strokes 10 times during the races.
- - - - - - - - - -
How many times does he switch strokes during the first half of the race?
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Keywords: while swimming, a 2 km race, Adam changes, from breaststroke, to a butterfly, every 200 m, how many, times, he switch, strokes, during, the race, the first half