For 12, you would do 90=4x+42, and 48=4x, and x=12
for 15, you would do 90=8x+66, and 24=8x, and x=3
for 18, you would do 90=3x+57, and 33=3x, and x=11
Answer:
0.33
Step-by-step explanation:
Let A denote an event. The odds of the horse finishing second is 33 to 67.
From the information, the total outcomes of event A is:

Hence, there are 100 total outcomes. The probability of the horse finishing second is calculated as:

Hence, the probability of finishing second is 0.33
110 x 10 - 4 x 7
1,100 - 28
1,072
Answer:
4√10xy/32y is the answer. (I think)