Question

At the store, beef jerky was $\$34.23$ for 3 pounds. If you bought 7 pounds, how much would it cost ?

Answer 1

Hint: The question can be done in the following way. First and foremost, you have to find the price of the beef jerky for 1 pound. To do it, you can divide the given cost for 3 pounds with 3. Next, you have to find the cost of beef jerky for 7 pounds. To get this, you have to multiply the cost of one pound of beef jerky with 7. Then you get your final answer.

Complete step by step answer:
The first step to solve the question, at the store, beef jerky was $\$34.23$ for 3 pounds. If you bought 7 pounds, how much would it cost, is to find out the price of one pound of beef jerky.
To get this, we divide the price of beef jerky for 3 pounds with 3. Therefore, we get,
$\Rightarrow p_1 = \dfrac{34.23}{3}$
$\Rightarrow p_1 = 11.41 $

We got the price of beef jerky for one pound as 11.41 dollars. Therefore, to get the price of beef jerky for 7 pounds, we multiply the cost of one pound of beef jerky with 7. Therefore, we get the answer as:
$\Rightarrow p_1 = 7 \times 11.41$
$\Rightarrow p_7 = 79.87 $

Therefore, we got the final answer for the question, at the store, beef jerky was $\$34.23$ for 3 pounds. If you bought 7 pounds, how much would it cost as $\$79.87$

Note: When you get these types of problems you need to read the question carefully. Be careful while doing the calculations and substitutions. You can do the above question in just one step where you divide the money with 3 and multiply with 7.