Question

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

Answer 1

$16.67

Explanation:

-Let Ben's expenditure be X,

#Ava's expenditure being three times Ben will be 3X, and half as much as Cora(2X)

-Given that the total expenditure was 50, Cora's portion is calculated as :

`Total=E_a+E_b+E_c\\\\50=2X+3X+X\\\\50=6X\\\\X=(50)/(3)\\\\E_c=2X=2* (50)/(3)=16.67`

Hence, Cora's expenditure is $16.67