<human>:  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?
<bot>: How much can James lift without lifting straps? ** After the increase, he can lift 300+50=<<300+50=350>>350 pounds
How much can James lift with lifting straps? ** Decreasing the distance increase the amount he can lift by 350*.3=<<350*.3=105>>105 pounds
How much can James lift with lifting straps for 10 meters? ** So he can lift 350+105=<<350+105=455>>455 for 10 feet
How much can James lift with lifting straps for 10 meters? ** The straps add another 455*.2=<<455*.2=91>>91 pounds
How much can James lift with lifting straps for 10 meters? ** So his total weight is 455+91=<<455+91=546>>546 pounds per hand
#### 546