CAT Quantitative Ability Questions | CAT TIme, Speed, Distance and Work questions
Comprehension
Directions for questions: Read the information given below and answer the questions that follow :
The petrol consumption rate of a new model car ‘Palto’ depends on its speed and may be described by the graph below.
CAT/2001
Question . 106
Manasa would like to minimize the fuel consumption for the trip by driving at the appropriate speed. How should she change the speed?
A : Increase the speedB : Decrease the speedC : Maintain the speed at 60 km/hourD : Cannot be determined
View Answer Explanatory Answer
Method of solving this CAT Quantitative Ability Question from TIme, Speed, Distance and Work question
(b) For consumption to be less say at 40 km/ hr, time = 5 hrs.
So, consumption = 2.5 × 5 = 12.5 litres at 80 km/hr, time = 2.5 hr, consumption = 7.4 × 2.5
which is high So for consuming lesser petrol she should decrease the speed.