Mixture A is 20% oil and 80% material B by weight. If 2 more kilograms of oil are added to the 8 kilograms mixture A, how many kilograms of mixture A must be added to make a 70% material B in the new mixture?
A)6
B)7
C)8
D)9
E)10
Can someone please explain the solution to this problem...![]()
A)6
B)7
C)8
D)9
E)10
Can someone please explain the solution to this problem...