加工一批零件，原计划15天完成,实际每天多做30个，结果只用10天就完成了任务，这批零件有多少个？9y;b+i1n3{/T6I3r2Q:s-Q6V
算式：提示4g,j9u5o(B;G8Z5k)k1K'?(B4S9y;b+i1n3{/T6I3r2Q:s-Q6V
答：这批零件有9,A/d/p7D'A0A9r'J7i)I(l*r)['~0Q6v个。9y;b+i1n3{/T6I3r2Q:s-Q6V