RRB ALP 2013 Ques 16
Question: A car travelling with $ \frac{5}{7} $ of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car?
Options:
A) $ 17\frac{6}{7}km/hr $
B) $ 35km/hr $
C) $ 25km/hr $
D) $ 30km/hr $
Show Answer
Answer:
Correct Answer: B
Solution:
- Usual speed of the car $ =\frac{42}{\frac{42}{25}}\times \frac{7}{5} $ $ =\frac{42\times 7\times 25}{42\times 5}=35km/hr $
BETA
