Question

recipe for pizza dough requires 3 parts wholemeal flour for each 4 parts of plain flour. How many cups of wholemeal flour are needed if 24 cups of plain flour are used?

Answer 1

3:4
24:?

3 x 8 = 24
4 x 8 = 32

24:32

32 cups of plain flour

Answer 2

So, you have 24 cups of plain flour. For every 4th cup, it’s 3 parts wholemeal flour.
24/ 4 is 6.
Multiply 6 by 3
It’s 18 parts of wholemeal flour