The tutor works a word problem to find time until market share equalization. Imagine a relatively new device, of which there are two competing versions, A and B. (We assume that no-one owns both.) The potential market is 100 million, …

Business math: a word problem about market share. Read more »

The tutor shows how to find the balance of a savings account after monthly deposits over a period of years, using the Texas Instruments BA-35. Example: $100 is deposited into a savings account each month for five years. If the …

Financial calculators: TI BA-35: finding account balance after regular deposits Read more »

The tutor shows how to use the Texas Instruments BA-35 to find the interest rate of a loan. Example: Suppose a loan is made for $750. Twenty months later, it is repaid with a lump sum of $880. What is …

Financial calculators: TI BA-35: finding interest rate of a loan with single lump-sum repayment Read more »