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Answer :
(i) Fraction of coloured part = \(\frac{1}{4} \)
\(\therefore \) Percentage of coloured parts
= \(\frac{1×100}{4×100} \) = \(\frac{100}{4} \)%= 25%
(ii) Fraction of coloured part = \(\frac{3}{5} \)
\(\therefore \)Percentage of coloured parts
= \( \frac{3×100}{5×100} \)= \(\frac{300}{5} \) %= 60%
(iii) Fraction of coloured part = \(\frac{3}{8} \)
\(\therefore \) Percentage of coloured parts
\(\frac{3×100}{8×100} \)=\(\frac{300}{8} \)% = 37.5%