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Pre-Algebra

Online Math Tutor Important Formulas – Chain Rule 1. Direct Proportion Two quantities are said…

<Online Math Tutor> 3. A man’s age is 125% of what it was 10 years…

<Online Math Tutor> 2. Father is aged three times more than his son Sunil. After…

Problems on Age – Solved Examples(Set 1) 1. Ten years ago, P was half of…