In June a baseball team that played 60 games had won 30% of
its game played. After a phenomenal winning streak this
team raised its average to 50% .How many games must the
team have won in a row to attain this average?
A. 12
B. 20
C. 24
D. 30
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In a typical motor cycle rally, every motor cycle has to reach a speed of 20 m/min within a minute and it increase its speed by 20 m/min and the sum was 1600 m/min. Four minutes later, a new motor cyclist started running in the race. After another two minutes, the motor cyclist with the speed of 400 m/min stopped due to injuries and again two new motor cyclist started running in the race. What is the current average speed?
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