Question

An engineer wants to make a 40% cement mixture. How many pounds of a 60% cement mixture must she mix with 12 pounds of a 30% mixture to create a 40% cement mixture?

Answer 1

No. :( .60(x) + .30(12) = .40(y) what's the dots? thx

Answer 2

what's x and y in your equation you put here?

Answer 3

so what would I do again? Ie the full equation in precents and stuff? BTW thank YOU SO MUCH!!! :)

Answer 4

@hero provided you with a system of equations. once you solve it you will obtain your desired solution