Most conventional mortgages prefer at least 20 percent down, which, depending on the loan you need, could be problematic. Down payment requirements for jumbo loans--requiring higher mortgage balances than Fannie Mae will purchase--vary, but are in the 20 percent range.
Best Answer: it depends on your oven. electric ovens take much longer to heat up than gas ovens. My electric at my old house took 20 to 30 minutes to get to 375 my gas oven in the house im at now takes about 15 to 20 minutes.est Answer: it depends on your oven. electric ovens take much longer to heat up than gas ovens. My electric at my old house took 20 to 30 minutes to get to 375 my gas oven in the house im at now takes about 15 to 20 minutes.
1 Cook for 15 to 20 minutes (depends on size of roast) at 450 degrees F. 2  Then, without opening the oven door, turn the heat down to 325 degrees F. 3  Cook until meat thermometer inserted reaches about 140 degrees. 4  Generally this should take about 2Â½ to 3 hours, but it varies on oven and roast size. Use a rack inside your baking pan, most come with one. 2  Place the roast in the preheated oven. 3  Cook for 15 to 20 minutes (depends on size of roast) at 450 degrees F. 4  Then, without opening the oven door, turn the heat down to 325 degrees F.