Target sells 24 bottles of water for $3, and 36 bottles of water for $4. Which is the better buy and by how much?

Mathematics

1 answer:

pishuonlain [190]3 years ago

6 0

Answer:

D) 36 bottles for $4 by 1.4¢ per bottle

Step-by-step explanation:

We calculate bottle per dollar for each option.

Bottles/Dollar= $\frac{24\ bottles}{\$3}=8$ bottles/dollar

#Both B and C charges the same as A and will have bottle/dollar ration of 8:1

$=\frac{36}{4}\\\\=9$

Hence, D is the better buy as it gives you 9bottles per $1 spent as compared to the 8 bottles per $1 spent as in the other 3 options.

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Of the 50 students in an undergraduate statistics class, 60% send email and/or text messages during any given lecture. They have

sasho [114]

Answer:

0.3 or 30%

Step-by-step explanation:

Since no innocent student will ever be caught, the probability that a student sends an email and/or text message during a lecture AND gets caught is given by the product of the probability of a student sending a message (60%) by the probability of the professor catching them (50%) :

$P = 0.5*0.6 = 0.3$