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Question 33
What is the price of tea?
I. Price of coffee is Rs. 5 more than that of tea.
II. Price of coffee was Rs. 5 less than the price of a cold drink which cost three times the price of tea.
Solution
Let price of tea be t, coffee be c and cold drink be d.
Statement 1: c=t+5, we cannot infer value of t from this information
Statement 2: c=d-5 and d=3t, we cannot infer the value of t from this information
Using the statements together, c=t+5 and c=3t-5.
=>t+5=3t-5
=>2t=10
=> t=5
Hence, we can answer the questions using both statements together.
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