In man hour work problems, if 8 men work for 3 hours, 24 man hours work amount is done. Then it is easy to say 4 men are needed to do same work in 6 hours.
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Time and work unitary method, Time and work formula, Improved work rate technique for working together and Time and work with 3 variables solved.
This is on how to solve similar profit and loss problem lightning quick by domain modeling for similar problems using basic and advanced concepts.
A man sells two watches at same price profit and loss problem: Know how to solve profit and loss problem in a few steps by problem solving techniques.
In a problem with multiple parameters, identify the base to be equalized and its target value and equalize the bases. This is base equalizing technique.
Base equalization technique produces quick solutions in indices problems. For fraction problems also, base equalization technique is indispensable.
Selected examples explain how to use base equalization technique in solving indices problems elegantly. It also is indispensable for fraction problems.
Break up a number into its factors, just as you break up a complex problem into its component simpler sub-problems. Factorization is one of the most basic operations and is used extensively in other more important problem areas of HCF and LCM...
Numbers and arithmetic operations. Number system concepts and methods for solving number problems in competitive exams explained on test example problems. Exercise problems with answers for practice.