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guardhic7165
26.07.2019 •
Mathematics
Numbered discs are placed in a box and one disk is selected at random. if there are 7 red discs numbered 1 through 7, and 4 yellow disks numbered 8 through 11, find the probability of selecting a disk numbered 3, given that a red disk is selected
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Ответ:
In this example, we are told that one of the conditions is that the disc is red. There are only 7 red disks. So our chance is out of 7.
Of those 7 discs, only 1 has the number 3. Our chance is 1/7.
Ответ:
12.5%
Step-by-step explanation:
sold for = 540
gain = 60
cost= 540-60= 480
gain%= 60/480*100%= 12.5%