What is the respective ratio of the number of teachers who teach Biology to the number of teachers who teach Physics?

6 : 7

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4 : 7

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3 : 5

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4 :5

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None of these

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Solution

The correct option is D 4 :5
Number of teachers who teach Biology (in per cent) = 12%
Number of teachers who teach Physics
(in per cent) = 15%
$∴$ Required ratio = 12 : 15
= 4 : 5

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Q. In a school there are

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teach mathematics and

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teach both mathematics and physics. The number of teachers who teach only physics are

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What is the respective ratio of the number of teachers who teach Biology to the number of teachers who teach Physics?

The correct option is D 4 :5Number of teachers who teach Biology (in per cent) = 12% Number of teachers who teach Physics (in per cent) = 15% ∴ Required ratio = 12 : 15 = 4 : 5

The correct option is D 4 :5
Number of teachers who teach Biology (in per cent) = 12%
Number of teachers who teach Physics
(in per cent) = 15%
$∴$ Required ratio = 12 : 15
= 4 : 5