50页纸大约厚0.4cm,2.2cm厚的纸大约有多少页?
问题描述:
50页纸大约厚0.4cm,2.2cm厚的纸大约有多少页?
答
2.2÷(0.4÷50),
=2.2÷0.008,
=275(页);
答:2.2cm厚的纸大约有275页.