Answer:
B . 1500 children and 700 adults
Step-by-step explanation:
create an equation
make use of variables:
children --x
adults --y
1.5x + 4y = 5050
x + y = 2200
now make use of the options given and place them into the equation .
lets try the first one
1.5 * (700) + 4*(1500) = 7050
lets try the second one
1.5 * ( 1500) + 4 *(700) = 5050
the answer is B.
you can check the others if you want to , so that you are able to see if you are correct. ( optional)