Question

4. Cement mortar was being prepared by mixing cement to sand in the ratio of 1: 6 by volume, he
cement mortar of 42 units of volume, how much more cement needs to be added to enrich the
mortar to the ratio 2:9?
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Answer 1

Answer:

∴ x = 2. Therfore, 2 units of more cement needs to be added to enrich the mortar to the ratio 2:9.

Step-by-step explanation: