Question

Henrietta bought 3 new blouses for summer. The blouses were on sale for 30% off the regular price of $30 each. This is $12 less than she spent for her favorite blouse. What information is unnecessary to find out the total price she paid for the blouses?

Answer 1

The unnecessary information is "This is $12 less than she spent for her favorite blouse." It would be useful if you already knew how much her favorite blouse cost.