The circumference of the front and rear wheels of a bicycle are 3.5 cm 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 turns is |
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(a) |
1.4 sec |
(b) |
2.1 sec |
(c) |
4 sec |
(d) |
6.4 sec |

The circumference of the front and rear wheels of a bicycle are 3.5 cm 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 turns is |
|||||||

(a) |
1.4 sec |
(b) |
2.1 sec |
(c) |
4 sec |
(d) |
6.4 sec |

1 Answer

127 votes

Time taken by front wheel to complete 1 revolution = sec.

Time taken by rear wheel to complete 1 revolution = sec.

Req. time = LCM of and = sec.

127 votes

127