How much water must be evaporated from 12 ounces of 1% salt solution to make 3% salt solution?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

For each given situation, determine if the method of randomization is either appropriate or not appropriate

The 7th grade has collected $200 for a field trip that would cost $600. the teachers decided to ask $50 from additional students to cover the cost. how mny students must pay to cover the cost ? a 16studentsb 80studentsc 160studentsd 8students show work