a bottle contains a certain solution . in the bottled solution , the ratio of water to soap is 3 : 2 , and the ratio of soap to salt is seven times this ratio . the solution is poured into an open container , and after some time , the ratio of water to soap in the open container is halved by water evaporation . at that time , what is the ratio of water to salt in the solution ?
"water : soap = 3 : 2 soap : salt = 21 : 2 = > for 21 soap , salt = 2 = > for 2 soap , salt = ( 2 / 21 ) * 2 = 4 / 21 so , water : soap : salt = 3 : 2 : 4 / 21 = 63 : 42 : 4 after open container , water : soap : salt = 31.5 : 42 : 4 so , water : salt = 31.5 : 4 = 63 : 8 e"
divide(multiply(multiply(2, 3), 3), multiply(multiply(2, 2), 2))