Answer:
c - amount of chances
Step-by-step explanation:
0.30c + 0.30c = 3.60
0.60c = 3.60
c = 6
They will get 6 throws each.
She spent $7.44 because 3.28 + 1.27 + 0.56 + 2.33 = 7.44
Step-by-step explanation:
On Monday maggie ran n miles.
On Tuesday, she she ran 90% of the number of miles that she ran on Monday i.e
.
On Wednesday, she ran 50% of the number of miles that she ran on Tuesday i.e. 
First expression : n+0.9n = 1.9 n
Second expression : n + 0.9 n + 0.45 n = 2.35 n
Hence, this is the required solution.
-30 is the answer to your problem.