CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A car can finish a certain journey in 10 hours at the speed of 48 km/hr. By how much should its speed be increased so that it may take only 8 hours to cover the same distance ? 


Solution

Let x km/hr be the speed. Then 
Time (in hours)108Speed (in km/hr)48x
Last period, more speed
By inverse variation
10:8=x:48108=x488x=10×48x=10×488=60
Speed requird = 60 km/hr.
Already speed = 48 km/hr.
Speed to be increase = 60-48=12 km/hr

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


Same exercise questions
View More


People also searched for
View More



footer-image