Three roommates Ava, Ben, and Cora went grocery shopping online. Ava spent three times as much as Ben and half as much as Cora. If together they spent a total of 50, how much did Cora spend?

Cora spent $ 30

Step-by-step explanation:

1. This is the information given to us to answer the question correctly:

x = Amount of money Ben spent

3x = Amount of money Ava spent (Ava spent three times as much as Ben)

6x = Amount of money Cora spent (half as much as Cora)

2. If together they spent a total of 50, how much did Cora spend?

Let's solve for x, this way:

x + 3x + 6x = 50

10x = 50

x = 50/10

x = 5

In consequence,

Ben spent $ 5 (x)

Ava spent $ 15 (3x)

Cora spent $ 30 (6x)

idk lol

step-by-step explanation:

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497