Ascientist has two solutions which she has labeled solution a and b. each has salt. she knows that solution a is 20% and solution b is 90% salt. she wants to obtain a mixture that is 35% salt and is 70 ounces. how many ounces of each solution should she use.

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false