The food rations went down to about 20 grammes...

The food rations went down to about 20 grammes of black bread per day, some potatoes, carrot jam and one egg a month.
Bread cost 12 zlotys, and a skilled worker's wage was 15 to 20 zlotys per day.

At the age of nine Janina David was leading a sheltered life with her prosperous Jewish family in Poland. One year later they were all facing starvation in the Warsaw ghetto.
In the memoirs of wartime childhood Janina David describes the family's struggle against insurmountable odds. When it becomes clear that none of them was likely to survive, the thirteen-year old girl was smuggled out of the ghetto to live with family friends - a Polish woman and her German - born husband. When their home becomes too dangerous, she was sent with false identity papers to a Catholic convent, where she lived in constant fear of being discovered.