Answer:
see explanation
Step-by-step explanation:
Let a represent adults and c children, then
a + c = 930 → (1)
4a + 2c = 2670 → (2)
Multiply (1) by - 2 to eliminate the term in c when added to (2)
- 2a - 2c = - 1860 → (3)
Add (2) and (3) term by term
2a = 810 ( divide both sides by 2 )
a = 405
Substitute a = 405 into (1) and solve for c
405 + c = 930 ( subtract 405 from both sides )
c = 525
That is 405 adult and 525 children's tickets were sold
