The clock at Xiao Ning's house and the school clock both run normally, but the clock at Xiao Ning's house is set fast, while the school clock is correct. Xiao Ning left home to go to school at 8:00 according to the home clock, and the school clock was exactly 7:50 when he got to school; at noon he left school at 12 o'clock and went home according to the school clock, and the home clock was exactly 12 when he arrived home. 34 points. If Xiao Ning takes the same time on the way to and from school, how many minutes is the clock at Xiao Ning's house set forward?
小宁家的钟和学校的钟走的都正常，但小宁家的钟拨快了，而学校的钟是正确的．小宁按家里的钟8点8分离家去学校，走到学校时学校的钟正好是7点50分；中午他按学校的钟12点时离校回家，到家时家里的钟正好是12点34分．如果小宁上学和下学路上用的时间是相同的，那么小宁家的钟拨快了多少分钟．
<result>26</result>