On a hot day there are two ice cubes. One is wrapped in a woollen blanket, the other left open

Why

Aryan's reasoning is neat — blankets feel warm, warmth melts ice, so wrapped ice should go first. The hidden mistake is that a blanket makes no heat of its own; it only SLOWS heat from crossing it. On a hot day the room is warmer than the ice, so heat is trying to get INTO the ice and melt it. The blanket slows that incoming heat, so wrapped ice actually lasts LONGER; the open cube, fully exposed to warm air, melts first. A blanket keeps a person warm only because their own body makes heat it can trap — ice makes none, so there's nothing to keep 'warm'. Test: this is why ice-cream carts wrap the box in thick cloth — to keep heat OUT, not in. Aryan's wrong: the wrapped cube melts slower, because the blanket blocks the room's heat from reaching it.