Lizzy: The government donated tons of sand to four Cities. City A received 16 1/2 tons of sand, City B received 26 tons of sand, and City C received 24 1/2 tons of sand. The supplier lost the data for City D; however, they know the total for all four cities was 95 tons. How many tons of sand did City D receive?.
Me: Hmmm, let me think. I think this is the detailed solution:
The total tons of sand donated to City A and City C is 16 1 / 2 + 24 1 / 2 = 41. The total tons of sand donated to City A, City B, and City C is 41 + 26 = 67. Therefore, City D received 95 - 67 = 28 tons of sand. Final answer: 28.