Question

Don't give unnecessary answer.​

Answer 1

Step-by-step explanation:

32 Kg is the mixture

Sand is 25%

25/100*32= 8 Kg

Gravel is 30%

30/100*32= 9.6 Kg

Sand required = 32-(9.6+8)

= 14.4 Kg

Therefore 14.4 Kg sand must be added