You need to use allegation method to solve this problem.
You want to prepare SW Injection containing 10% D using 70% D
70% D. 10 parts ( 10-0=10)
10% D
0% D. 60 parts (70-10=60)
You need to add 70% D to 0% I.e 60 parts of SW (1015 ml of SW)
60 parts is 1015 ml
10 part is 10*1015/60 = 169.17 ml
