Lesson 25 : Logarithmic Real Life Problems

Which of the following situations show the application of the logarithmic function?

What is the depreciated value of a smartphone discounted 35% of its original price of ₱36,000.00?

You observed that the behavior of bacteria laboratory tripled every minute. Write an equation with base 3 to determine the population of bacteria after one hour.

Mr. Juan Bayan thought of investing or saving some of his money after all the leisures that he enjoyed. He believes in the saying “early comer is better than hard worker”. With ₱10,000.00 remaining cash on hand he plans to save it in a bank, but he is still in doubt where to invest the money. Using the formula 𝐴=𝑃(1+𝑟)^𝑛 help him to solve his problem by answering the questions that follow. bank offers him a time deposit of 36% compounded annually, how much will his money be after 10 years?

Mr. Juan Bayan thought of investing or saving some of his money after all the leisures that he enjoyed. He believes in the saying “early comer is better than hard worker”. With ₱10,000.00 remaining cash on hand he plans to save it in a bank, but he is still in doubt where to invest the money. Using the formula 𝐴=𝑃(1+𝑟)^𝑛 help him to solve his problem by answering the questions that follow. If he would like to have ₱500,000 in the future, how long will it take him to save with the same amount of initial investment and the same interest rate?

Mr. Juan Bayan thought of investing or saving some of his money after all the leisures that he enjoyed. He believes in the saying “early comer is better than hard worker”. With ₱10,000.00 remaining cash on hand he plans to save it in a bank, but he is still in doubt where to invest the money. Using the formula 𝐴=𝑃(1+𝑟)^𝑛 help him to solve his problem by answering the questions that follow. He’s been thinking that if only he save at an early age he could have gotten a lot bigger. Based on question no. 14 if he starts to invest at the age of 24 how old is he to get the ₱500,000.00?