At Black Horse Junior School, there were a total of 394 teachers and children. The number of teachers and boys combined was 189, and the number of girls and teachers combined was 217.

1. There were ........ Teachers
2. There were ........ Boys
3. There were ........ Girls

x - teachers y - boys z - girls
x + y + z = 394 x + y = 189 x + z = 217 x + y + z = 394 y = 189 − x z = 217 − x x + 189 − x + 217 − x = 394 − x = − 12 x = 12 y = 189 − 12 y = 177 z = 217 − 12 z = 205

Answered by konrad509 | 2024-06-10

There are 12 teachers, 177 boys, and 205 girls at Black Horse Junior School. These numbers were determined by setting up equations based on the information given and solving for each variable. The solution involves simple algebraic manipulation.
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Answered by konrad509 | 2024-10-23