Question

How much sand do you need to add to 3.2m^3 of soil with 40% sand in order to make a soil with 60% sand

Answer 1

Answer:

$1.6m^3$ sand is to be added to make sand percentage $60\%$

Step-by-step explanation:

From the question we are told that:

Total soil $N=3.2m^3$

Initial sand percentage $S_1=40\%$

Final sand percentage$s_2=60\%$

Generally the sand and other particles division is mathematically given by

$40\% of 3,2=1.28$

and

$60\% of 3.2=1.92$

Generally  what will make 60\% of 3.2 40\% is mathematically given by

$x=1.92*0.4\\x=4.8$

Generally the sand to be added is mathematically given by

$4.8sand-3.2sand =1.6m^3$

Therefore

$1.6m^3$ sand is to be added to make sand percentage $60\%$