Speed of car

The car went to a city that was 240 km away. If his speed increased by 8 km/h, it would reach the finish one hour earlier. Determine its original speed.

Correct answer:

v =  40 km/h

Step-by-step explanation:

s = vt  240 = vt 240 = (v+8)(t1)  240 = (v+8)(240/v1)  240 v=(v+8) (240v)  240 v=(v+8) (240v) v2+8v1920=0  a=1;b=8;c=1920 D=b24ac=8241(1920)=7744 D>0  v1,2=2ab±D=28±7744 v1,2=28±88 v1,2=4±44 v1=40 v2=48  v>0  v=v1=40=40 km/h

Our quadratic equation calculator calculates it.

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: