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UGC-NET-Paper1

Maths

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How many minutes is it before 12 noon if 48 minutes ago it was three times as many minutes past 9 AM?

1. 33 minutes
2. 43 minutes
3. 40 minutes
4. 43.5 minutes

दोपहर 12 बजे से पहले कितने मिनट हैं यदि 48 मिनट पहले यह सुबह 9 बजे से तीन गुना अधिक था?

1. 33 मिनट
2. 43 मिनट
3. 40 मिनट
4. 43.5 मिनट

This Question came in

UGC-NET-Commerce-25-December-2021-Shift-1-Q22

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Detailed Explanation & Answer

12 noon = 12 x 60 = 720 minutes
9 am = 9 x 60 = 540 minutes

Let x = number of minutes before noon

The time now is 12 noon - x = 720 - x minutes
48 minutes ago it was 720 - x - 48
720-x-48 = 540 + 3x
720-48-540 = 4x
⇒x=33 minutes

दोपहर 12 बजे = 12 x 60 = 720 मिनट
सुबह 9 बजे = 9 x 60 = 540 मिनट

माना x = दोपहर से पहले मिनटों की संख्या

अभी समय दोपहर 12 बजे - x = 720 - x मिनट है
48 मिनट पहले यह 720 - x - 48 था
720-x-48 = 540 + 3x
720-48-540 = 4x
⇒x=33 मिनट

The Correct Answer is 1

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