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a deli charges 5 for a sandwich and 2 for a drink in one day the deli made 230 selling a total 55 sandwiches and drinks . how many drinks were sold at the deli that day

Respuesta :

Answer: 15

Step-by-step explanation:

Let the number of sandwich sold be a

Let the number of drinks sold be b

The following can be formed as.an equation from the question:

5a + 2b = 230 ....... i

a + b = 55 ....... ii

Multiply equation i by 1

Multiply equation ii by 5

5a + 2b = 230 ........ iii

5a + 5b = 275 ........ iv

Subtract iv from iii

-3b = -45

b = 45/3

b = 15

The number of drinks sold were 15