Indeed, for some gems, such as diamonds, the price per carat can increase exponentially as the gem size increases. Therefore, a 1 carat stone may cost $1,000 while a 2 carat stone may cost $4,000. This means that good quality sapphires and rubies in larger sizes tend to have a much higher price per carat.
Re: Convert positive # to negative. Hi, if you positive number is in A1, use the following formula to convert it to a negative number =A1*-1 Time values can not be negative. Microsoft MVP http://www.teylyn.com Twitter: http://twitter.com/IngeborgNZ. Microsoft MVP.
Excel can not display negative time as time, but you can display as character as follows: =IF((IF(B1>A1,B1-A1,B1 + 1 - A1) - TIME(0, C1,0))<0,-,) & TEXT(ABS(IF(B1>A1,B1-A1,B1 + 1 - A1) - TIME(0, C1,0)),hh:mm) Note: you can not calculate with this result because now it is not a number. Best Regards.