#20 16/36 = 4/d 4 x 36 = 144/16= 9 d=9 #24 144/40 = x/5 144 x 5/40=18 x=18
There are 12 inches in one foot. If it rains 2 inches per hour and we need one foot we need to look for a number that can be multiplied by 2 to get 12.
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The answer is 6
Total length = 111.6 metres
(12.3x7) + 15 + 10.5 = total length
It’s rather half of that or double of that