In what ratio must two sorts of sugar, costing #390 and #315 per kg, be mixed to produce a mixture worth #369 per kg?

Correct answer:

r =  18:7

Step-by-step explanation:

b=1 390a + 315b = 369(a+b)  390 a+315 1=369 (a+1)  21a=54  a=2154=2.57142857  a=7182.571429  r=a/b=2.5714/12.5714=18:7

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Check out our ratio calculator.
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: