# Khan/khan-exercises

Clarified that the answer is wanted in units of second in both the pr…

`…oblem statement and in the hint.`
1 parent eb1768b commit c07a8768462828c95c8b3e1e1fc08d83294f6e74 jklange committed Jan 12, 2012
Showing with 3 additions and 3 deletions.
 @@ -71,13 +71,13 @@

{On Monday|Last week}, person(1) and person(2) decided to see how fast they could sprint meters meters. They asked their friend person(3) to time them with a stopwatch.

{After time_3 minutes, person(3) agreed to time the runners.|} person(1) sprinted first and ran meters meters in time_1 seconds. When it was person(2)'s turn, he(2) sped off and completed the run in time_2 seconds.

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How much faster was person(2) than person(1)?

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How much faster was person(2) than person(1) in seconds?

time_1-time_2
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To find how much faster person(2) was than person(1), we need to find the difference between their times. -

person(1)'s time - person(2)'s time = difference in times. +

To find how much faster person(2) was than person(1), we need to find the difference between their times in seconds. +

person(1)'s time person(2)'s time = difference in times.

graph.subtractor = new DecimalSubtractor( time_1_integer, time_1_decimal, time_2_integer, time_2_decimal ); graph.subtractor.show();