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PROPORTION PROBLEMS

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Ratio and Proportions

RATIO AND PROPORTIONS The number of times one quantity contains another quantity of the same kind is called the Ratio of the two quantities. The ratio 2 to 3 is written as 2:3 or . 2 and 3 are called the terms of the ratio. 2 is the first terms (is also called antecedent) and 3 is the second term (is also called consequent). COMPOUND RATIO Ratios are compounded by multiplying together the antecedents for a new antecedent, and the consequents for a new consequent.                                                                                                      a x c x e ·          Ratios  a:b,c:d, and e:f  ...

HCF and LCM- PART II

HCF and LCM

HCF means Highest Common Factor: HCF of two or more numbers is the greatest number that divides each of them exactly. We are going to practice question like first simple, little bit tuff and more tuff. Tuff means the question takes more time for calculation that’s it ok. I will give some tips for quicker calculation methods also. Ex. 1 Find the HCF of 42 and 70             42 = 2x3x7             70 = 2x5x7  HCF = 2x7=14                         Quicker method             70 - 42 =28             42 -28=14             28-14=14         ...

CUBE

Cubes of large numbers are rarely used. Here we are going to practice two-digit number.. First we have remember the cubes up to 10 1 3   = 1               2 3 = 8                3 3 = 27              4 3 = 64              5 3 = 125                                    6 3 = 216            7 3 = 343            8 3 = 512            9 3 = 729      ...