Work shown above! Box a is 240 lbs Box b is 120 and Box c is 150 lbs hope this helps c:
Answer: The answer is 
Step-by-step explanation: Given in the question that ΔAM is a right-angled triangle, where ∠C = 90°, CP ⊥ AM, AC : CM = 3 : 4 and MP - AP = 1. We are to find AM.
Let, AC = 3x and CM = 4x.
In the right-angled triangle ACM, we have

Now,

Now, since CP ⊥ AM, so ΔACP and ΔMCP are both right-angled triangles.
So,

Comparing equations (A) and (B), we have

Thus,

I am pretty sure the answer would be -.02
Bc you would do 2-3.6/5- -3
The answer as a mixed number is 1 7/25
The answer as a decimal is 1.28