How much would a set of seven rocks cost if I paid $350 for 28 rocks

Question

asked Apr 13, 2021 73.3k views

2 Answers

Annemichelle · Answer 1 · 2021-04-15T18:53:33+0000

Answer:

$87.50

Explanation:

We can find the price by dividing 350 by 4, since 28 divided by 4 is 7.

350/4

= 87.5

So, a set of seven rocks would be $87.50

Al · Answer 2 · 2021-04-19T15:37:10+0000

Answer:

87.50

Explanation:

We can use ratios to solve

28 rocks 7 rocks

-------------- = ------------------

350 dollars x dollars

Using cross products

28x = 350*7

Divide each side by 38

x = 350*7/28

x =87.5