Question

2.01 proportions assignment
college math geometry standard g3

1. jesse enlarged the size of a photo to a height of 18 in. what is the new width if it was originally 2 in tall and 1 in wide?
2. a frame is 9 in wide and 6 in tall. if it is reduced to a width of 3 in then how tall will it be?
3. the money used in saudi arabia is called the riyal. the exchange rate is 4 riyals to $1. find how many riyals you would receive if you exchanged $5.
4. jacob bought one bulb of elephant garlic for $2. how many bulbs can stephanie buy if she has $12?
5. one bulb of elephant garlic costs $2. how many bulbs of elephant garlic can you buy for $14?
6. if you can buy one bunch of seedless green grapes for $2 then how many can you buy with $18?
7. the currency in sweden is the kronor. the exchange - rate is approximately $1 for every 7 kronor. at this rate, how many dollars would you get if you exchanged 14 kronor?
8. totsakan bought one can of pineapple chunks for $2. how many cans can stefan buy if he has $16?

Explanation:

1.

Step1: Set up proportion

Let the new width be $x$. The proportion is $\frac{2}{1}=\frac{18}{x}$.

Step2: Cross - multiply

$2x = 18\times1$.

Step3: Solve for $x$

$x=\frac{18}{2}=9$ in.

Step1: Set up proportion

Let the new height be $y$. The proportion is $\frac{9}{6}=\frac{3}{y}$.

Step2: Cross - multiply

$9y=3\times6$.

Step3: Solve for $y$

$y = \frac{18}{9}=2$ in.

Step1: Set up proportion

Let the number of Riyals be $z$. The proportion is $\frac{4}{1}=\frac{z}{5}$.

Step2: Cross - multiply

$z = 4\times5$.

Answer:

9 in

2.