5. Tiana made lemonade for a sidewalk sale, and she sold 3/4 of it at the sale. After the sale, she
gave 3/2 gallons of the remaining lemonade to her cousins. If Tiana had 7/8 of a gallon left after the
sale and giving some to her cousins, how much lemonade, in gallons, did she start with?

Respuesta :

The sum of the lemonade sold, the lemonade given to her cousins and

the amount left, gives the the amount of lemonade at the start.

Response:

  • The volume of lemonade with Tiana at the start is 9.5 gallons

How are arithmetic operations performed with fraction?

Given:

The amount of lemonade Tiana sold at the sale = [tex]\dfrac{3}{4}[/tex]

The amount of lemonade Tiana gave to her cousins = [tex]\mathbf{\dfrac{3}{2}}[/tex] gallons

The amount of lemonade Tiana had left = [tex]\dfrac{7}{8}[/tex] of a gallon

Required:

The amount of lemonade, Tiana started with

Solution:

Let x represent the amount of lemonade Tiana started with, we have;

[tex]x = \mathbf{\dfrac{3}{4} \cdot x + \dfrac{3}{2} \ gallons + \dfrac{7}{8} \ gallons}[/tex]

[tex]\mathbf{x - \dfrac{3}{4} \cdot x} = \dfrac{3}{2} \ gallons + \dfrac{7}{8} \ gallons[/tex]

[tex]\dfrac{1}{4} \cdot x = \dfrac{3}{2} \ gallons + \dfrac{7}{8} \ gallons = \dfrac{19}{8} \ gallons[/tex]

[tex]x = \dfrac{19}{8} \ gallons \times 4 = \mathbf{9.5 \ gallons}[/tex]

  • The volume of lemonade Tiana starts with is 9.5 gallons

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