Q1: 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 204
C 488
D 195
ANS:B - 195
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).
0.128 : 25 :: 1 : 
0.128