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Problem solving in mind

How old is Mommy - Puzzling Problem on Ages Solved in Easy Steps by Systematic problem solving

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The difference of ages of two children and the sum of the squares of their ages are given. The mother's age can be formed by placing squares of the ages of the two children one after the other forming a 4-digit number. Such a problem hides key patterns that, if discovered, give you the solution immediately...

How to solve Time and Work problems in simpler steps, type 2 brief

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In 42 days 40 men complete a work. As it happened, instead of all of them working together to finish the job, they started working together, but at the end of every 10th day 5 men left. In how many days would then the work be completed? Rich time and work concept of Mandays technique along with natural number concepts deliver speedy solution...

How to solve Time and Work problems in simpler steps, type 1 brief

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C and A can do a piece of work in 20 days, B and C in 24 days, and A and B in 30 days. B and C leave after three of them work together for 10 days. In how many more days would A complete the work? Using rich concept of Work rate technique and solving the problem as far as possible in mind, without writing anything on paper, results in within a minute solution...

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