IAI's May,2015 exam Q16

IAI's May,2015 Q16

Following is the split of utilization of INR 100 earned in India:
Investment of INR 25
Tax of INR 10
Import of INR 15
Domestic consumption of INR 50
The CRR is 10%. What is the value of Money multiplier?

Edit: I got the answer

 

Can you please explain how?

 

From 100, 15 goes to abroad for import.
So, from those 100, 85 will roll... and then 85×0.85 so on.
If you apply logic of Bank Money Multiplier, you'll see Money Multiplier =1/0.15