1/2 because if there's at least 1 boy that same boy could be the elder child so 1 could be a boy and the other a girl younger than him
Multiply than divide by 1
Answer:
100 wizards in magic club
Step-by-step explanation:
20% of 120 is 20 so
120-20=100
2x - y = 5 also equals 4x - 2y = 10
4x-2y=10
+3x+2y=4
7x = 14
x = 2
2(2) - y = 5
-y = 1
y = -1
so, B. (2,-1)
