In this post we will see how to deal with percentage problems involving two variables. Consider the two problems on percentage given below, If A x B = k, where A and B are variables and k is constant, then if A increases by 10%, what is the percentage change in B? If A’s salary […]
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In this post we explain the basics of Highest Common Factor (HCF) also known as the Greatest Common Divisor(GCD) or the Greatest Common Factor(GCF). We will understand the techniques on how to find the HCF of two or more numbers. Under the “Problems on HCF” section we will solve some important aptitude problems on HCF. […]