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The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?

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Question

The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?

Options

  • 90

  • 120

  • 220

  • 240

MCQ
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Solution

120

Explanation:

There are 420 boys and 300 girls. To make the numbers equal, 120 more girls must be admitted.

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Chapter 7: Ratio and Proportion - COMPETENCY-FOCUSED QUESTIONS [Page 117]

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R.S. Aggarwal Mathematics [English] Class 10 ICSE
Chapter 7 Ratio and Proportion
COMPETENCY-FOCUSED QUESTIONS | Q 46. | Page 117
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