From total of 10000 programs only one is winning. The probability that you will get the winning number can be calculated as the ratio between the numbers of desired events and the total numbers of events. There is only one winning number , so the ratio is : 1/10000. If you purchase two programs the probability is the sum of the two probabilities: 1/10000+1/10000=2/10000.
You are basically just comparing the ratios (the ratios will have to be the same for both for it to be the correct answer)
so for choice A you would do:
116.5cm:845km =0.14
174cm:1160km=0.15
these are not equal so it would not be correct
the correct answer would be B because:
42.25cm:845km=.05
58cm:1160km=.05
Answer: answer is d
Step-by-step explanation: input in calculator or set both equal to y and then set them equal to each other