6 pastries costs $30. What will 4 pastries cost?
6 Pastries 30 $
4 Pastries a $ ;
We need to make the right proportions.
4x30=6xa ;
120=6a ;
a=20 :)
24 pastries,because I started,by times 6×5 that equal 30 so I backed it up an did 6×4 an that equals 24..