The solid mixture made for concrete has cement and sand in the ratio 4: 9 and the ratio of water to sand in the final mixture is 7: 3. If 1827 units of water is used in the final mixture, then how many units of sand and cement are together used?
1
1442 units
2
1346 units
3
1131 units
4
1142 units
5
1256 units