Hello,
Try any of these. The first one will give you in the next cell, 2nd one with Lookup #
<b>Excel 2007</b><table cellpadding="2.5px" rules="all" style=";background-color: #FFFFFF;border: 1px solid;border-collapse: collapse; border-color: #A6AAB6"><colgroup><col width="25px" style="background-color: #E0E0F0" /><col /><col /><col /><col /><col /><col /></colgroup><thead><tr style=" background-color: #E0E0F0;text-align: center;color: #161120"><th></th><th>A</th><th>B</th><th>C</th><th>D</th><th>E</th><th>F</th></tr></thead><tbody><tr ><td style="color: #161120;text-align: center;">1</td><td style="font-weight: bold;;">veh #</td><td style="font-weight: bold;;">time in</td><td style="font-weight: bold;;">Last Time</td><td style="text-align: right;;"></td><td style="font-weight: bold;;">Lookup Vehicle #</td><td style="font-weight: bold;;">Last Time In</td></tr><tr ><td style="color: #161120;text-align: center;">2</td><td style="text-align: right;;">11</td><td style="text-align: right;;">1100</td><td style=";"></td><td style="text-align: right;;"></td><td style="text-align: right;;">11</td><td style="text-align: right;;">200</td></tr><tr ><td style="color: #161120;text-align: center;">3</td><td style="text-align: right;;">12</td><td style="text-align: right;;">1200</td><td style=";"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">4</td><td style="text-align: right;;">13</td><td style="text-align: right;;">1150</td><td style="text-align: right;;">1150</td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">5</td><td style="text-align: right;;">14</td><td style="text-align: right;;">1200</td><td style=";"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">6</td><td style="text-align: right;;">15</td><td style="text-align: right;;">100</td><td style="text-align: right;;">100</td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">7</td><td style="text-align: right;;">11</td><td style="text-align: right;;">200</td><td style="text-align: right;;">200</td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">8</td><td style="text-align: right;;">12</td><td style="text-align: right;;">400</td><td style="text-align: right;;">400</td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr><tr ><td style="color: #161120;text-align: center;">9</td><td style="text-align: right;;">14</td><td style="text-align: right;;">530</td><td style="text-align: right;;">530</td><td style="text-align: right;;"></td><td style="text-align: right;;"></td><td style="text-align: right;;"></td></tr></tbody></table><p style="width:3.6em;font-weight:bold;margin:0;padding:0.2em 0.6em 0.2em 0.5em;border: 1px solid #A6AAB6;border-top:none;text-align: center;background-color: #E0E0F0;color: #161120">Sheet3</p><br /><br /><table width="85%" cellpadding="2.5px" rules="all" style=";border: 2px solid black;border-collapse:collapse;padding: 0.4em;background-color: #FFFFFF" ><tr><td style="padding:6px" ><b>Worksheet Formulas</b><table cellpadding="2.5px" width="100%" rules="all" style="border: 1px solid;text-align:center;background-color: #FFFFFF;border-collapse: collapse; border-color: #A6AAB6"><thead><tr style=" background-color: #E0E0F0;color: #161120"><th width="10px">Cell</th><th style="text-align:left;padding-left:5px;">Formula</th></tr></thead><tbody><tr><th width="10px" style=" background-color: #E0E0F0;color: #161120">C2</th><td style="text-align:left">=IF(<font color="Blue">B2=LOOKUP(<font color="Red">2,1/(<font color="Green">$A$2:$A$9=A2</font>),$B$2:$B$9</font>),B2,""</font>)</td></tr><tr><th width="10px" style=" background-color: #E0E0F0;color: #161120">F2</th><td style="text-align:left">=LOOKUP(<font color="Blue">2,1/(<font color="Red">$A$2:$A$9=E2</font>),$B$2:$B$9</font>)</td></tr></tbody></table></td></tr></table><br />