NTSE Stage 2 MAT 2019 Exam Question Paper

Question : 24 of 100

Marks: +1, -0

Ishan wishes Irfan ‘Good Morning’ when the hour hand of a (measured clockwise) clock is positioned between 9 and 10. The angle between the two hands is 145°. The time shown by the clock is

9.08 AM
9.10 AM
9.12 AM
9.15 AM

Validate

Solution:

90^{∘}+(6x)^{∘}-(\;\;{x}/{2})^{∘}=145^{∘}

(where x is minutes move by minute hand)

⇒x=10

Hence, correct time is 9 : 10 AM.

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