How many drinks were sold?

Question

At a concert, $720 was collected for hot dogs, hamburgers, and drinks. All three items were sold for $1.00. Twice as many hot dogs were sold as hamburgers. Three tomes as many drinks were sold as hamburgers. How many drinks were sold?

Answer 1

Let        h = # of hamburgers sold

Let      2h = # of hot dogs .... twice the # of hamburgers

Let      3h = # of drinks sold ... 3 times the number of hamburgers

 

Since all items are $1 each, and $720 was collected, there were 720 items sold.

Here is our equation:

 

     hamburgers + hot dogs + drinks = 720

     h + 2h + 3h = 720

     6h = 720

     h = 120

 

There were 120 hamburgers sold.

There were 240 hot dogs sold ... 2 times 120

There were 360 drinks sold ... 3 times 120

 

Total:  120 + 240 + 360 = 720