Or,if you want to get back £100,its 7/4 plus 1 divided into 100,which is 100 divided by 2.75( 7/4 +1),which=£36.
If 4/1 equates to 4+1 into 100 =20 If 6/4 equates to 2.5 into 100 =40 Just add 1 to your price each time
Or,if you want to get back £100,its 7/4 plus 1 divided into 100,which is 100 divided by 2.75( 7/4 +1),which=£36.If 4/1 equates to 4+1 into 100 =20If 6/4 equates to 2.5 into 100 =40 Just add 1 to your price each time