exam Maths Puzzle Numerical Ability

That's okay, my teacher found out that she had given us the upper class' problem. Thanks for trying, but this is the real problem:

Decision makers in many fields, including busi

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exam Other Question

2t^2-98 over 4t^2-4 times 8t+8 over 16t-112=

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another problem..

If a bus traveled 10 km/h faster, it would take 2h less time to make a 315km trip. What is its speed?

Thanks!