A load of bricks is twice as heavy as a load of sticks. the total weight of 4 loads of bricks and 4 loads of sticks is 771 kilograms. what is the total weight of 1 load of bricks and 3 loads of sticks

If x = mass of 1 load of sticks and y = mass of 1 load of bricks and a load of bricks is twice as heavy as a load of sticks y = 2x then,

4x + 4y = 771; 4x + 4 (2x) = 771; 12x = 771; x = 64.25 kg

To find y: y = 2x = 2*64.25 = 128.5 kg

Total weight of 1 load of bricks and 3 loads of sticks: y + 3x

128.5 + 3*64.25 = 321.25 kg

The weight of one block is 192.75.