Find the greatest possible length which can be used to measure the length 7 mt, 3.85 mt and 12.95 mt exactly.

31 cm 32 cm 34 cm 35 cm

35 cm

Such measure will be L.C.M. of given numbers - 7, 3.85, 12.95 or using elimination only 1 number is a multiple of 7 i.e. 35