Question

Marco needs to buy some dog food. At the nearest​ store, 5 bags of dog food cost ​$27.50. How much would Marco spend on 3 bags of dog ​food?

Answer 1

What we can do is calculating what one bag cost. If we know that 5 cost 27.50 dollars, to know how much does one cost we only divide:

27.50/5 = 5.50 dollars

Now, we know how much does one bag cost, so we multiply it by three:

5.50 * 3 = 16.50

Now, we know 3 bags cost 16.5 dollars

Answer 2

$16.50

Explanation:

$27.50/5=5.5

5.5*3=16.5