The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?	Choose the correct choice from the following answers:
A) 1 min
B) 2 min
C) 3 min
D) 4 min
E) None
Time for one revolution = 60/15= 
<gadget id="calculator">60/15</gadget>
<output>4</output>
4   60/ 20= 
<gadget id="calculator">60/ 20</gadget>
<output>3</output>
3   60/48= 5/4   LCM of 4, 3, 5/4   LCM of Numerators/HCF of Denominators = 60/1= 
<gadget id="calculator">60/1</gadget>
<output>60</output>
60   1 minNSWER:1 min
<result>A</result>
The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?