Answer:
Incomplete question
So i analysed the question, the question should have a schematic diagram
Explanation:
He uses a wheelbarrow
Weight of wheelbarrow =Wb=15lb
Weight of fertilizer Wf=60lb
The force acting on the wheel barrow are
2 equal upward force lifting the barrow up
The weight of the barrow downward
The weight of the fertilizer downward
The reaction at the tire upward.
Check attachment for full solution