Q3 of 59 Page 63

Compare the following pairs of ratios.

i.ii.


iii. iv.


v.

(i)


Given ratios are


Step I: Make the second term of both the ratios equal.


Multiply and divide first ratio by √7:



Multiply and divide second ratio by 3:



Step II: Compare the first terms (numerators) of the new ratios.


Since the denominators of new ratios are equal, compare the numerators of the new ratios:


Since, 9>√35, therefore .


Therefore the second ratio is greater than the first ratio according to the ratio comparison rules.



(ii)


Given ratios are


Step I: Make the second term of both the ratios equal.


Multiply and divide first ratio by √5:



Multiply and divide second ratio by √7:



Step II: Compare the first terms (numerators) of the new ratios.


Since the denominators of new ratios are equal, compare the numerators of the new ratios:


Since, 21>15, therefore .


Therefore the second ratio is greater than the first ratio according to the ratio comparison rules.



(iii)


Given ratios are


Step I: Make the second term of both the ratios equal.


Multiply and divide first ratio by 121:



Multiply and divide second ratio by 18:



Step II: Compare the first terms (numerators) of the new ratios.


Since the denominators of new ratios are equal, compare the numerators of the new ratios:


Since, 605 <306, therefore .


Therefore, the first ratio is greater than the second ratio according to the ratio comparison rules.



(iv)


Given ratios are


Simplifying the ratios, we get:



Since, the denominators of both the terms are same; compare the first terms (numerators) of the new ratios.


Since the denominators of new ratios are equal, compare the numerators of the new ratios:


Since, √5 = √5, therefore .


Therefore, both the ratios are equal, according to the ratio comparison rules.



(v)


Given ratios are


Simplifying the ratios, we get:


(Multiply the numerator and denominator of both the ratios by 10)


Step I: Make the second term of both the ratios equal.


Multiply and divide first ratio by 71:



Multiply and divide second ratio by 51:



Step II: Compare the first terms (numerators) of the new ratios.


Since the denominators of new ratios are equal, compare the numerators of the new ratios:


Since, 6532 > 1734, therefore .


Therefore the first ratio is greater than the second ratio according to the ratio comparison rules.



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