Question 1120098
1. Distance walked = 6 km/h * 2 h = 12 km
Distance cycled = 36 - 12 = 24 km
The time cycled = 24 km/(16 km/h) = 1.5 h

2. Let x = the number of coins.  Thus the number of notes = 6x
The total amount = 244 = 6x*10 + x = 61x
Thus x = 4
The number of coins = 4, number of notes = 24

3. Let d = the number of days
   Anna's amount = 30 + 5d
   Ojo's amount = 186 - 7d
Set the two amounts equal:
30 + 5d = 186 - 7d
Solving for d, we get 12d = 156 -> d = 13