Question

In 50kg of mixture of sand and cement 45% is cement. How much sand should be added so that the proportion of cement becomes 10%?

Answer 1

Step-by-step explanation:

Total=50

Cement=45%of50=22.5kg

Sand=50-22.5=27.5

We have to make cement 10%of total

10%of50=5

New part of cement=22.5-5=17.5

So

Ve have to add 17.5kg of sand to make 10%of cement