A shopkeeper sells tea and coffee. 2 cups of tea and 3 cups of coffee cost Rs 110. 1 cup of tea and 1 cup of coffee cost Rs 40. Use substitution to find the cost of one cup of coffee (in Rs).
Class 10Substitution MethodAlgebra — Systems of Equations
A27
B33
C30
D60
Step-by-Step Solution
From t+c=40,t=40−c. Substitute into 2t+3c=110:2(40−c)+3c=110,80+c=110,c=30. Coffee costs Rs 30.
Answer: C) 30
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