motorist traveling at a steady speed of 90 km/h covers a section of motorway in 25 minutes. After a speed limit is imposed he finds that, when traveling at the maximum speed allowed he takes 5 minutes longer than before to cover the same section. Calculate the speed limit.  

idk

step-by-step explanation:

14

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: