Question

There are 600 pages in a novel. Rui Feng reads 150 pages of the novel on Friday and 40% of the remaining pages on Sunday. Express the number of pages that reamins to be read as a percentage of total number of pages in the novel.
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Answer 1

Answer:

45\%

Step-by-step explanation:

Based on the given conditions, formulate: ( 40\% - 1 ) \times ( 150 - 600 ) \div 600

Calculate the sum or difference:\dfrac{- 0.6 \times (150 - 600)}{600}

Calculate the sum or difference:\dfrac{- 0.6 \times (- 450)}{600}

Remove the parentheses:\dfrac{0.6 \times 450}{600}

Convert decimal to fraction:\dfrac{\dfrac{6}{10} \times 450}{600}

Write as a single fraction:\dfrac{\dfrac{6 \times 450}{10}}{600}

Divide a fraction by multiplying its reciprocal:\dfrac{6 \times 450}{10} \times \dfrac{1}{600}

Write as a single fraction:\dfrac{6 \times 450}{10 \times 600}

Cross out the common factor:\dfrac{6 \times 3}{10 \times 4}

Cross out the common factor:\dfrac{3 \times 3}{5 \times 4}

Calculate the product or quotient:\dfrac{9}{5 \times 4}

Calculate the product or quotient:\dfrac{9}{20}

Multiply a number to both the numerator and the denominator:\dfrac{9}{20} \times \dfrac{5}{5}

Write as a single fraction:\dfrac{9 \times 5}{20 \times 5}

Calculate the product or quotient:\dfrac{45}{100}

Rewrite a fraction with denominator equals 100 to a percentage:45\%

Answer: 45\%