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A heating coil takes of 6 min to boil ce...

A heating coil takes of 6 min to boil certain amount of milk. Another heating coil takes 3 min to boil same amount of milk. Supply voltage is same. When the coils are connected in parallel,time taken to boil same amount of milk is

A

9 min

B

2 min

C

4.5 min

D

3 min

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