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To reach point B from point A, at 4 pm, Sara will have to travel at an average speed of 1 8 km/h. She will reach point B at 3 pm, if she travels at an average speed of 24 km/h. At what average speed should Sara travel to reach Point B at 2 pm?


A) 36 km/h

B) 28 km/h

C) 25 km/h

D) 30 km/h

E) 32 km/h

Correct Answer:
A) 36 km/h

Description for Correct answer:
Let the distance between A and B = d km

According to question,

\( \large \frac{d}{18} - \frac{d}{24} = 1 \)

\( \large \frac{4d - 3d}{72} = 1 \)

d=72km

Time taken by Sara with the speed of 18 km/h

=\( \large \frac{72}{18} = 4hr \)

Required speed = \( \large \frac{72}{4 - 2} = \frac{72}{2} = 36km/hr \)

Part of solved IBPS PO-Prelims questions and answers : Exams >> Bank Exams >> IBPS PO-Prelims




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