1.

Sand and cement are in the ratio 6:5 in a mixture when 71 kg how much sand must be added to the mixture so as to make the ratio 8:5​

Answer»

Answer:

12.9

Step-by-step explanation:

6x + 5X = 71

x = 6.45

(6*6.45 +a)/(5*6.45)=8/5

a=12.9



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