Question

kenji mixes 1/5 clay soil with 1/8 bale of straw to make an Adobe brick how much soil will he need to use the whole bale of straw.

Answer 1

Clay soil = 1/5

bale of straw = 1/8

Clay soil needed = x

Bale of straw needed = 1

Clay soil : Bale of straw (rate)

1/5 : 1/8 = x : 1

1/5 ÷ 1/8 = x / 1

1/5 × 8/1 = x / 1

8/5 = x / 1

Cross product

8 * 1 = 5 * x

8 = 5x

Divide both sides by 5

x = 8/5