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Aptitude · Q205

Area

Competitive Exams · Aptitude · question 205

Q205

The circumferences of the front and rear wheels of a bicycle are 3.5 m and 3 m respectively. If the vehicle is moving at a speed of 15 m/sec, the shortest time in which both the wheels will make a whole number of turns is :

A.
1.4 seconds
Answer
B.
2.1 seconds
C.
4 seconds
D.
6.4 seconds

Answer: Option A

Solution

Answer: Option A
Solution:
Time taken by front wheel to complete one revolution :

Time taken by rear wheel to complete one revolution :

∴ Required time :