book Maths Puzzle Numerical Ability

hi! hope someone can help me with problems...with solutions please. thanks so much!!!

30) There are 300 people in John�s graduating class. 40% of them went to the Senior Prom w

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book Other Question

Solve this problem please. 5 radical 6 minus 1 all over 5 and i was wondering if you could simplify any. Thank You! 1. x=8log100(10)

Next two need to be written as a single expression with coefficient.
2. logaK-logbM-logbA

3. logb(2y+5)-1/2logb(y+3)