Let the maximum capacity be 100
Main wallet holds m% and backup wallet holds b%
To solve this we need to keep in mind the following points:
1. b > m
2. Main wallet is filled to 100% capacity
3. Half of b value when added with m should give 100 (i.e, if b=80, then b/2=40, m should be 60, since 60+40 = 100)
So, lets go along the given values -> half of the below value when added with the given option should give 100
30/2 = 15, => 100-15=85, Option not available
45/2 = 22.5 => 100-22.5=77.5, Option not available
50/2 = 25 => 100-25 =75, Option not available
55/2 = 27.5 => 100-27.5=72.5, Option not available
60/2 = 30 => 100-30=70, Option not available
90/2 = 45 => 100-45 = 55, Option is available
So,
b=90 and m=55