Answer:
He has 42 rocks
Step-by-step explanation:
- 10 fewer children he gives 3 to each and has fourteen left
- So we know he has 42 rocks so multiply
On day no 9, because to increase her mileage by 4 to reach 8 it will take her 4/0.5=8 days plus day 1 where she ran just 4 miles.