CRAZYBANANA:Ya! Since the 173cm side has been cut into 43pc x4cm, then balance is only 1cm, cannot use liao! :?jarenchuatw:Thanks...but still can't really understand the 2nd part added on:
After 43x27=1161 rectangles have been For the width 166cm, there is a leftover of 166 - 27x6 = 4cm
Of which, 173/6 = 28 (round down) more rectangles can be cut.
Total = 1161 + 28 = 1189
Tot that we have already cut out some rectangles from 173, how come can still divide by 6 again??
![](\"http://farm8.staticflickr.com/7129/7077006905_597abbcb65.jpg\")
match3frog:Hi, need help on these 2 questions...
Samuel and Calvin started jogging round a 2.4km circular track in opposite directions. Samuel took 12min to complete each round. After every 8 min, Samuel met Calvin.
a) Find Calvin's average jogging speed in m/min.
b) How many kilometres would Samuel have completed by the time he first met Calvin again at the start point?
Thanks!
A. First we have to find out Samuel speedSamuel average speed = Distance / Time\t\t = 2400 m / 12 min\t\t = 200 m/minFind out the distance Samuel met Calvin every 8 min bySamuel distance after 8 min = Avg Speed * time\t\t\t\t = 200 m/min * 8 min\t\t\t\t = 1600 mSamuel starting Calvin starting point\t\t\t\t\t\t\t point |-----------------------------*--------------------|\t\t\t\t\t\t\t* Samuel met CalvinDistance of Calvin met Samuel for Calvin is 2400 m - 1600 m = 800 mAnswer for Calvin average speed in m/min would be:Calvin average speed = Distance / Time\t\t\t = 800 m / 8 min\t\t\t = 100 m/minb. First we have to know how long it takes for Calvin to complete each round byTime for Calvin to complete = Distance / Average Speed\t\t\t\t = 2400 m / 100 m/min\t\t\t\t = 24 minTime for Samuel to complete each round is 12 min, that means Samuel would have completed 4800 m in 24 minutes which is where the starting point for Calvin