3 years ago

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

Mathematics

2 answers:

cestrela7 [59]3 years ago

8 0

Answer:

87.50

Step-by-step 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

Alex787 [66]3 years ago

6 0

Answer:

$87.50

Step-by-step 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

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