Sinea and Ren are going to the carnival next week.



The table shows the amount that each person spent on snacks, games, and souvenirs the last time they went to the carnival.

{Sinea} snacks: $5 / games: $8 / souvenirs: $12
{Ren} snacks: $10 / games $8 / souvenirs: $20

A. Sinea wants to spend money using the same ratios as on her last trip to the carnival. If she spends $26 on games; how much will she spend on souvenirs?

B. Ren wants to spend money using the same ratios as on his last trip to the carnival. If he spends $5 on souvenirs, how much will he spend on snacks?

C. (What if?) Suppose Sinea and Ren each spend $40 dollars on snacks, and each person spends money using the same ratios as on their last trip. Who spends more n souvenirs? Explain.

Respuesta :

A.

First, we need to find the ratio from games to souvenirs.

We know that Sinea spent  $8 in games and $12 in souvenirs the last time she went to the carnival, so let's find the ratio:

[tex]\frac{games}{souvenirs} =\frac{8}{12}[/tex]

we can simplify the left side to get:

[tex]\frac{games}{souvenirs} =\frac{2}{3}[/tex]

Since Sinea wants to spend money using the same ratios and she spends $26 on games, we just need to replace that value in our ratio and solve for souvenirs

[tex]\frac{games}{souvenirs} =\frac{2}{3}[/tex]

[tex]\frac{26}{souvenirs} =\frac{2}{3}[/tex]

[tex]souvenirs=\frac{26*3}{2}[/tex]

[tex]souvenirs=39[/tex]

Answer

Sinea will spend $39 on souvenirs.

B.

First, we need to find the ratio from souvenirs to snacks.

We know that Ren spent  $20 in souvenirs and $10 in snacks the last time she went to the carnival, so let's find the ratio:

[tex]\frac{souvenirs}{snacks} =\frac{20}{10}[/tex]

[tex]\frac{souvenirs}{snacks} =\frac{2}{1}[/tex]

Since Ren wants to spend money using the same ratios and he spends $5 on souvenirs, we just need to replace that value in our ratio and solve for snacks

[tex]\frac{souvenirs}{snacks} =\frac{2}{1}[/tex]

[tex]\frac{5}{snacks} =\frac{2}{1}[/tex]

[tex]snacks=\frac{5}{2}[/tex]

[tex]snacks=2.5[/tex]

Answer

Ren will spend $2.5 on snacks.

C.

First, we need to find the ratio from souvenirs to snacks for Sinea

[tex]\frac{souvenirs}{snacks} =\frac{12}{5}[/tex]

Now we can use the same ratio from point B for Ren and compare the two totals.

- For Sinea

[tex]\frac{souvenirs}{snacks} =\frac{12}{5}[/tex]

[tex]\frac{souvenirs}{40} =\frac{12}{5}[/tex]

[tex]souvenirs=\frac{40*12}{5}[/tex]

[tex]souvenirs=96[/tex]

Sinea will spend $96 on souvenirs

- For Ren

[tex]\frac{souvenirs}{snacks} =\frac{2}{1}[/tex]

[tex]\frac{souvenirs}{40} =\frac{2}{1}[/tex]

[tex]souvenirs=40*2[/tex]

[tex]souvenirs=80[/tex]

Ren will spend $80 on souvenirs

Answer

Siena will spend more in souvenirs; in fact, she will spend $16 more than Ren.