Math, asked by rockayan78, 9 months ago

Two bullets were fired at a place at an Interval of 12 minutes. A person approaching the firing point in his car hears the two sounds at an Interval of 11 minutes 40 seconds. The speed of sound is 330 metres per second. What is the approximate speed of the car? ​

Answers

Answered by aniketsiddarthk
1

Home » Aptitude » Speed, Time and Distance » Question

InterviewMania App

Speed, Time and Distance

Easy Questions

Moderate Questions

Difficult Questions

Speed, Time and Distance Tutorial

Aptitude

Number System

Simplification

Fractions

Elementary Algebra

LCM and HCF

Average

Approximation

Unitary Method

Linear Equation

Quadratic Equation

Discount

Surds and Indices

Percentage

Square root and cube root

Order of Magnitude

Profit and Loss

Odd Man Out and Series

Work and Wages

Algebra

Stocks and Shares

True Discount

Ratio, Proportion

Partnership

Alligation or Mixture

Time and Work

Pipes and Cistern

Speed, Time and Distance

Problem on Trains

Height and Distance

Banker's Discount

Boats and Streams

Races and games

Problems on Ages

Clocks and Calendars

Simple interest

Compound Interest

Sets and Functions

Area and Perimeter

Volume and Surface Area of Solid Figures

Sequences and Series

Plane Geometry

Logarithm

Probability

Permutation and Combination

Statistics

Mensuration

Trigonometry

Aptitude miscellaneous

Two bullets were fired at a place at an interval of 12 minutes. A person approaching the firing point in his car hears the two sounds at an interval of 11 minutes 40 seconds. The speed of sound is 330 metres per second. What is the approximate speed of the car?

34 kmph

32 kmph

36 kmph

38 kmph

Correct Option: A

If the car were not moving, the person would have heard the two sounds at an interval of 12 minutes. Therefore, the distance travelled by car in 11 minutes 40 seconds is equal to the distance that could have been covered by sound in 12 min – 11 min. 40 seconds = 20 seconds.

Distance covered by sound in 20 seconds

= 330 × 20 = 6600 m

In 11 min 40 seconds

or 700 seconds the car travels 6600 m.

In 1 second the car will travel

6600

metre =

66

metre

700 7

66

metre per second

7

=

66

×

18

km per hr.

7 5

=

1188

km per hr.

35

= 33

33

km per hr. ≈ 34 kmph

35

Similar questions