The fifth grade students from a certain school went on a spring outing. When they went there, one car was full for 12 people, and when they came back, it was also full for ten people. How many people are there at least in this grade?
某校五年级的同学去春游，去时12个人坐一辆车正好坐满，回来时10个人坐一辆车也正好坐满．问这个年级最少有多少人？
<result>24</result>