James can do a farmer's walk with 300 pounds per hand for 20 meters. He can lift 30% more if he only goes 10 meters. In addition, lifting straps give him another 20%. How much can he move with lifting straps for 10 meters if he increases his 20-meter distance without straps by 50 pounds and everything else increases in proportion?
Use reasoning to answer the following question.
546
After the increase, he can lift 300 + 50 = 350 pounds.

Decreasing the distance increase the amount he can lift by 350 *.

3 = 105 pounds.

So he can lift 350 + 105 = 455 for 10 feet.

The straps add another 455 *.

2 = 91 pounds.

So his total weight is 455 + 91 = 546 pounds per hand.

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So, the answer is 546