Round 2 Started
Same rules as before

No

My math is rusty, so I've no idea on #19.

At a quick glance, all others seem correct except:

#8 should be B
#15 should be C
#18 should be A

*edit* Double checked. Changed answer.

19 is c. The system doesn't have a solution, making it inconsistent.

8: B. Let x be the distance travelled on the second day. We want to know 1.5x, and we already know that x + 1.5x = 2.5x = 1380. Therefore x=522 and 1.5x = 828.

15: C. sum (-2 times first equation) with (3 times second equation) to get (8+15)s = 23s = 3*23, so s = 3. We've narrowed the answer down to C already, but substitute to confirm and we get r = 4.

18: A. 2 adults plus 3 children is the same price as 7 children, which adds up to $28. Therefore a child's ticket is $4 by division.

19: C. The system of equations states that the two given lines intersect, but the equations themselves have no intersection with each other. Inconsistent.

Hope it's not too late, my math is a bit rusty and it took mi a while to go through all 20 questions. Still fun though :)

My answers:
1-7: ok
8: wrong (B)
9-14: ok
15: wrong (C)
16-17: ok
18: wrong (A)
19: inconsistent (no solution)
20: ok

In case it's not automatically assumed, every question I didn't answer is already correct.

Ah, it's fun to do these simple little maths problems. Thanks for the contest, rooshandark8.

I wasn't trying to search for replies, but for the book in use, since oasis asked about it, as I tried to explain before.
Thank you for your trust though *sighs*

*Note - Any questions not mentioned are to be assumed correct, or I missed something*

8. Wrong - B. 828 | x + 1.5x = 1380 | x = 522 | 1.5x = 828

15. Wrong - C. r = 4, s = 3 | None of the other possible solutions resolve the first equation, so ruled them out right there and didn't bother with the second one.

18. Wrong - A. Child's = $4, adult's = $8 | x = 2y, 2x + 3y = 28. So, 2(2y) + 3y = 28, 7y = 28, y=4

19. Wrong - C. Inconsistent | Honestly, not sure how to check it, but fairly certain they're inconsistent since I couldn't figure out any way for them to be connected.

1. D correct
2. A correct
3. D correct
4. D correct
5. B correct
6. C correct
7. B correct
8. wrong, answer is B 1380/2.5x1.5 = 552x1.5 = 828
9. D correct
10. C correct
11. A correct
12. A correct
13. C correct
14. A correct
15. blank, answer is C. solve by substitution, 3r = 4s, multiply 2nd equation by 3, 6r+15s=69 ==> 2(4s)+15s=69 ==> s = 69/23 = 3, r = 3x4/3=4.
16. A correct
17. C correct
18. blank, answer is A. solve by substitution, c=28/7=4, a=4x2=8.
19. blank, answer is C. inconsistent because there are no solutions. Substituting either x or y gives 9 = 40.
20. A correct

Round 2 Answer
Reward:
3 Tickets awarded each.

Here are the answers.
--------------------------------------------------------------------------------
1.D correct
2.A correct
3.D correct
4.D correct
5.B correct
6.C correct
7.B correct
8.B correct
9.D correct
10.C correct
11.A correct
12.A correct
13.C correct
14.A correct
15.C correct
16.A correct
17.C correct
18.A correct
19.C correct
20.A correct
--------------------------------------------------------------------------------
Round 3 to be posted soon

Just curious about the tickets, is there a running tally somewhere or are you keeping the amounts to yourself until the drawing?

Well so far its just me.
But your more than welcome to keep a tally.

Round 3
Difficulty Level 3

No.