For computing this, follow this method: 4 loads of stone weigh 2/3 ton. 4loads---------------------2/3 1load---------------------? So it will be computed as 1x 2/3 /4 = 2/3x4= 1/3x2=1/6 the weight of 1 load of stone is 1/6 ton Hope this helps. Let me know if you need additional help!