I guess 76.8% readers will like this puzzle. What should be the least number of people who need to read this post in order to achieve 76.8%? Answer: 125 people
A milkmaid adds 4 litres of water to 2 litres of milk before distribution. By mistake she added 2 litres water to 4 litres of milk. How much more water has she to add to rectify her mistake? Answer: Six litres. Water should be double than the milk content. the present content is 4 litres. Hence, the total water should be 8. it has 2 litres already. So, another 6 litres are to be added.
Exactly how many minutes is it before eight o'clock if 40 minutes ago, it was three times as many minutes past four o'clock? Answer: 50 minutes. Between four o'clock and eight o'clock we have 240 minutes. In these 240 minutes we have 4 lots of the unknown time (t) and 40 minutes. Therefore 240 = 4 x t + 40. Therefore t = 50 minutes.
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