Hypothesize what might occur when a positive charged magnet is placed next to a negative charged magnet.   what might happen when a positive charge is placed next to a neutral charge?

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form