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Arithmetic Ability
Time, Speed & Distance
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DSSSB PRT 2022 Afternoon 📅 16 Mar, 2022

90 trees are planted in a straight line with equal distance between any two consecutive trees. A bus moving at 54 km/hr takes 30 seconds to reach from the 1st tree to the 7th tree. What is the distance between the 11th tree and the 46th tree?

A
2625 m
B
2750 m
C
2475 m
D
2575 m
Result Summary
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DSSSB PRT
2022 • 16 Mar, 2022 • Afternoon
90 trees are planted in a straight line with equal distance between any two consecutive trees. A bus moving at 54 km/hr takes 30 seconds to reach from the 1st tree to the 7th tree. What is the distance between the 11th tree and the 46th tree?
Correct Answer
2625 m
• **Speed:** 54 km/hr = 54 × (5/18) = 15 m/s. • **Dist (1 to 7):** 6 gaps. Dist = Speed × Time = 15 × 30 = 450 m. • **Gap Size:** 450 / 6 = 75 m per ......
Ref/Book : DSSSB PRT 2022
Ref. Subject Maths
Chapter -
Ref. Topic Time, Speed & Distance
Pg. No -
💡 Analysis & Explanation
• **Speed ▼
** 54 km/hr = 54 × (5/18) = 15 m/s.
• **Dist (1 to 7) ▼
** 6 gaps. Dist = Speed × Time = 15 × 30 = 450 m.
• **Gap Size ▼
** 450 / 6 = 75 m per gap.
• **Target ▼
** 11th to 46th tree = (46 - 11) = 35 gaps.
• **Total Dist ▼
** 35 × 75 = 2625 m.
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