Question

When loaded with bricks, a lorry has a mass of 11600 kg . If the mass of the bricks is three times that of the empty lorry, find the mass of the brick.

Answer 1

Answer:

8700 kg

Step-by-step explanation:

let mass of empty lorry be 'x' kgs.

mass of bricks = '3x' kg

mass of lorry with bricks = 11600 kg

SO, 3x + x = 11600

4x = 11600

x = 11600/4

x = 2900

mass of bricks = 3x = 2900x3 = 8700 kg

Answer 2

Answer:

8700 kg

Step-by-step explanation:

weight of empty lorry = x kg.

mass of bricks = 3x

Total mass of lorry = 11600 kg

thus,

mass of empty lorry + mass of bricks = total mass of lorry

x + 3x = 11600

4x = 11600

x = 2900

therefore mass of empty lorry is 2900 kg.

mass of bricks = 3x

= 3 * 2900

= 8700 kg

thus mass of bricks is 8700 kg.