Word problem into linear equations

Question

A small coffee shop sells a regular(R) cup of coffee for $2 and a large(L)for $3. Kari and her friends buy five cups coffee and spend a total of $13. How many large and regular cups did they buy?

Answer 1

regular cup(R)

 

large cup(L)

 

 

 

Equation

 

Total cup = L + R =5

 

Value = 2R + 3L=13

 

 

 

 

Rearranging equation

 

L+ R = 5

 

3L+2R= 13

 

 

L= 3

R= 2

 

3 large cup and 2 regular cup