Question

1. Two students Abebe and Eyasu are working  on a construction project.They have to calculate the total mass of the  mixed cement when sand, cement powder and water are added together

         Mass of sand   =107.34 kg                            Mass of water =11.04kg

        Mass of cement powder  =5.6kg        Mass of mixture = ?

                  Abebe calculate the mass to be 124.0 kg and  Eyasus’s calculation gives 123.98kg. Who was write  and why ?

Answer 1

Mass of the mixture =123.98kg

Eyasus was right because he never rounded off the answer the answer as Abebe did.