Bunuel wrote:
How much did a certain telephone call cost?
(1) The call lasted 53 minutes.
(2) The cost for the first 3 minutes was 5 times the cost for each additional minute.
Question: How much did a certain telephone call cost?Statement 1: The call lasted 53 minutes.Tariff of call (i.e. charge per min of call) is unknown hence
NOT SUFFICIENT
Statement 2: The cost for the first 3 minutes was 5 times the cost for each additional minute.Tariff of call (i.e. charge per min of call) is unknown along with the duration hence
NOT SUFFICIENT
Combining the two statementsTariff of call (i.e. charge in dollar or cents per min of call) is unknown along with the duration hence
NOT SUFFICIENT
Answer: Option E
Can you please help me interpret statement 2 in math equation? How to build the relation between the 3 minutes cost and cost of additional minute?