NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 8: Ratio & Proportion - True or False Questions
Question 19

Question. 19

\(3:33 = 33:333\)

Answer:

false

Detailed Answer with Explanation:

  1. To check if two ratios are equal, change them into fractions and compare.

    Given statement: (3:33 = 33:333)

    As fractions: (dfrac{3}{33}) and (dfrac{33}{333})

  2. Simplify the first fraction:

    (dfrac{3}{33} = dfrac{3 div 3}{33 div 3} = dfrac{1}{11})

  3. Simplify the second fraction:

    Both 33 and 333 are divisible by (3).

    (dfrac{33}{333} = dfrac{33 div 3}{333 div 3} = dfrac{11}{111})

    (No further common factor, so it stays (dfrac{11}{111}).)

  4. Compare the simplified forms:

    (dfrac{1}{11} = 0.090909ldots)

    (dfrac{11}{111} = 0.099099ldots)

    These decimals are different, so the ratios are not equal.

  5. Quick cross-multiplication check (optional):

    Compare (3 imes 333) and (33 imes 33).

    (3 imes 333 = 999)

    (33 imes 33 = 1089)

    Since (999 e 1089), the ratios are not equal.

NCERT Exemplar Solutions Class 6 – Mathematics – Unit 8: Ratio & Proportion – True or False Questions | Detailed Answers