A) 900km
B) 945km
C) 990km
D) 1350km
Correct Answer: C
Solution :
Let the length of the journey be x km. Then, \[\frac{x}{45}\,-\frac{x}{60}\,=\frac{11}{2}\,\Rightarrow \,\frac{4x-3x}{180}\,=\frac{11}{2}\,\Rightarrow \,\frac{x}{180}=\frac{11}{2}\] \[\Rightarrow \,x=\frac{11\times 180}{2}\,=990\,km\].You need to login to perform this action.
You will be redirected in
3 sec