A fisherman needs to winterize his boat and uses a 40% antifreeze solution. How much pure antifreeze must he add to 10 liters of 25% antifreeze to make a 40% solution? Hint: pure
antifreeze is 100% antifreeze.

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

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?