book Maths Puzzle Numerical Ability

if a car is traveling at 55 mph how far will it travel once you hit the brake?

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Write as a single logarithm with coefficient 1, the expression:

2 log 5(small 5) x + ½ log5(small five)Square root x
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The growth strain of bacteria is known to be exponential in nature. After an elapsed time of three hours the population in a