Quantitative Aptitude Ques 1590
Question: Amit walks at a uniform speed of 4 km/h and 4 h after his start, Brijesh cycles after him at the uniform rate of 20 km/h. How far from the starting point will Brijesh catch Amit?
Options:
A) 15 km
B) 18 km
C) 13 km
D) 20 km
E) None of these
Show Answer
Answer:
Correct Answer: D
Solution:
- Let Brijesh catches Amit after $ xh, $ Then, distance travelled by Amit in $ (x+4)h $ = Distance travelled by Brijesh in $ xh. $ According to the question, $ 4(x+4)=20x $
$ \Rightarrow $ $ 4x+16=20x $
$ \Rightarrow $ $ 16x=16 $
$ \therefore $ $ x=\frac{16}{16}=1 $ Distance travelled by Brijesh in $ 1h=(1\times 20)km=20km $
BETA
