<br />Read the following and answer the questions that follow the BSNL announced a cut in the STD rates on 27 December 2011.

<br />Read the following and answer the questions that follow the BSNL announced a cut in the STD rates on 27 December 2011. The new rates and slabs are given in the table below and are to be implemented from 14 January 2012.<br /><br />Slab Details-<br />Rates (R/min)<br />distance -<br />50- 200<br />200-500<br />500-1000<br />1000+<br /><br />peak rates – <br />old- 4.8,11.6,17.56,17.56<br />new- 2.4,4.8,9.00,9.00<br />off peaks-<br />old- 1.2,3.0,4.5,6.0<br />new- 1.2,2.4,4.5,4.5<br /><br /><br />28. The maximum percentage reduction in costs will be<br />experienced for calls over which of the following<br />distances?<br />options <br />29. The % difference in the cost of a set of telephone calls made on the 13th and 14 January having durations of 4 minutes for a distance of 700 km and 3 minutes for a distance of 1050 km is ( if all the three calls are made in peak times )​