Answer:
₦40.30
Explanation:
Step 1: Find how much each person gets equally
Divide 142 by 3

Each person's share is ₦47.3
Step 2: Find out how much Ore, Tobi, and Mary has
Subtract 11 from Ore's share

Add that 11 to Mary's share

Subtract 7 from Tobi's share

Add that 7 to Ore's now-share

Tobi's share is 40 naira and 30 kobo
Extra Info:
To see if it is correct, confirm the answer by adding all their shares.