I think it's 0.385. I might be wrong. Try using WolframAlpha for this stuff, it should work.
Multiply the denominators to be the same Lowest common multiple. when the denominators are both the same you can add the numerators together
e.g. 3/5 + 2/10
= 6/10 + 2/10
= 8/10
I believe it is 500 pounds b cause one out of 5 is less than 500 out of 1000 or 500 pounds
Answer:

General Formulas and Concepts:
<u>Calculus</u>
Antiderivatives - Integrals
Integration Constant C
Integration Property [Multiplied Constant]: 
Trig Integration: 
U-Substitution
Step-by-step explanation:
<u>Step 1: Define</u>

<u>Step 2: Identify Substitution Variables</u>
u = 3x
du = 3dx
<u>Step 3: Integrate</u>
- [Integral] Rewrite:

- [Integral] U-Substitution:

- [Integral] Trig Integration:
![\displaystyle \frac{1}{3}[-cos(u)] + C](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B3%7D%5B-cos%28u%29%5D%20%2B%20C)
- [Expression] Multiply:

- [Expression] Back-Substitute:
