Percentages?

[Cassandra123]

To build your dream garden you need ten cubic feet of soil containing 17% clay. you have two types you can combine to achieve this: soil with 10$ clay and soil with 35% clay. How much of each soil should you use?

 

[Denis]

To build your dream garden you need ten cubic feet of soil containing 17% clay. you have two types you can combine to achieve this: soil with 10$ clay and soil with 35% clay. How much of each soil should you use?

   x  @  10
10-x  @  35
===========
10    @  17

[10x + 35(10-x)] / 10 = 17

OK?