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Thursday, 15 September 2011

How to do?

Guys help me with this question:

Matthew, Joanne and Paul ran in a race. When Matthew reached the finishing line in 10 minutes, Joanne had only run 5/8 of the distance. Her average running speed is 7.5m/min slower than Matthew's speed. When she completed the race, Paul was still 72m behind her.
a) What was Matthew's average running speed in km/h?
b) What was Paul's average running speed in m/min?

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