I've wasted 5 minutes of my life watching Grumpy John's "80 mph" post (including "Deer Crossing" video) and need to get even:p:p
William and Kate (you may have heard of them) go walking hand-in-hand around their estate. The walk is 5 kilometrs in length.
Before starting they record their vital statistics:
William Kate Blood pressure 125 / 78 128 / 80 Pulse rate 65 bpm 70 bpm Respiration rate 12 15 Height 187cm 165cm Weight 85 Kg 70kg Length of stride 93cm per step 82cm per step
The walk takes 1 hour and they then compare their vital statistics against those recorded before the walk.
William is obviously in great physical condition and there is virtually no change between his starting and ending stats. Only his Pulse rate increased noticeably from 65 to 86 bpm.
On the other hand Kate is still to regain her pre – pregnancy fitness; her stats have changed significantly:
Before After Blood pressure 128 / 80 132/ 85 Pulse rate 70 bpm 122 bpm Respiration rate 15 19 Height 165cm n/c Weight 70kg n/c Length of stride 82cm per step 78cm per step
At the start of the walk Kate was taking 122 steps per 100 meters compared with Willam’s 107. During the last 100 meters, Kate took 128 steps - an increase of almost 5% in the number of steps: William took exactly the same number of steps as he took in the first 100 meters. In total, Kate took 6245 steps compared with Wiliam’s 5350; almost 17% more steps than William .
Question 1: What is William’s average walking speed?
Question 2: Is Kate’s average walking speed –
a. 17% higher than William’s?
b. 5% higher than William’s?
c. 17% lower than William’s?
d. 5% lower than William’s?
e. the same as William’s ?
This should be easy, so I reckon I am still owed at least 4 minutes:no:
Bob
