# Aptitude - Chain Rule - Discussion

### Discussion :: Chain Rule - General Questions (Q.No.13)

13.

An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth?

 [A]. 178 [B]. 195 [C]. 204 [D]. 488

Explanation:

Le the required time be x seconds.

More metres, More time (Direct Proportion) 0.128 : 25 :: 1 : x 0.128x = 25 x 1

 x = 25 = 25 x 1000 0.128 128 x = 195.31. Required time = 195 sec (approximately).

 Chai said: (Aug 19, 2011) 125*60=7680 7680/1000=7.68 25/7068=3.255 3.255*60=195.31

 Sindhu said: (Aug 27, 2013) For 0.128 mtrs = 1 secs. For 1 mts = 1/0.28 secs. For 25 mts = 25 (1/0.128) = 195.31.

 Kalyani said: (Jun 12, 2015) 0.128 meters = 1 second, then. 25 meters = ? 25*1/0.128 = 195.31.

 Himank said: (Dec 19, 2015) Its easy. Consider 128 and 25000. Then divide. Its easy isn't it, 195.31.

 Ramesh said: (Jun 21, 2016) 0.128:25::x:1, 25x/0.128:1, x:0.128/25, x:128/25000.

 Ishan said: (Nov 7, 2019) It should be 204 seconds as it takes a minimum time of 195.31. There should be an option with 196 seconds it will be most appropriate.