1. Unless otherwise specified in the question, responses to numerical question m

Question

1. Unless otherwise specified in the question, responses to numerical question must be within 5% of the correct answer. Try out different responses to the following question, which has an answer of 20, where a correct response is between 19 and 21.

What is the average velocity (in kilometers per hour) of a cart that travels 100 km in 5 hours?

2.An exception to the 5% tolerance rule arises for simple calculations that can be done in your head that come out as integers or or simple decimals. So if the calculation involves dividing 5 by 2 with the result of 2.5, an answer of 2.6 may not be graded as correct.

Give the value of 6.5 times 2.

Try it several times giving the answer (13) in different forms (say, 13 or 1.3e1) and with different accuracies (say, 13.001 or 13.2). Since this is a simple calculation, two of these four will be graded as incorrect.

Explanation / Answer

1) v = 100/5 km/hr = 20 *1000/60*60 = 5.556 m/s

2) 6.5*2 = 13

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