Problem description:

The width of the clothing material will be 90 single width 1 10 double width 70X2.

Analysis:

This is a problem with textiles. We don't know why we divide it like this, but we only remember these widths.

Single person is 70cm, now it is generally 90cm, and double person is generally 140cm, and there are also 120cm and 150cm.

If it is material conversion, it is calculated by the area formula (but the length of the cloth consumed by a single piece cannot be shorter than the longest piece of clothing), and it is generally no problem to adjust it properly.