184. Buying a Rubber Band. Here is a puzzle that looks very much like some old puzzles, but requires a completely different approach. The author is unknown.

Four mothers (each with her daughter) went to the store to buy a rubber band. Each mother bought twice as many meters of rubber band as her daughter, and each of them bought as many meters as the cents they paid per meter. Mrs. Jones spent 76 cents more than Mrs. White; Nora bought 3 meters less rubber band than Mrs. Brown; Gladys bought 2 meters more rubber band than Hilda, who spent 48 cents less than Mrs. Smith.

What is the name of Mary's mother?
184. Mary's mother was Mrs. Jones. The purchases and expenses were distributed as follows.

Among the daughters:

Hilda bought 4 m for 16 cents,

Gladys bought 6 m for 36 cents,

Nora bought 9 m for 81 cents,

Mary bought 10 m for 1 dollar.

Among the mothers:

Mrs. Smith bought 8 m for 64 cents, Mrs. Brown bought 12 m for 1.44 dollars, Mrs. White bought 18 m for 3.24 dollars, Mrs. Jones bought 20 m for 4 dollars.