Understanding Lease Duration

The video presents a mathematical problem involving a 99-year lease. The colonel discusses the lease with a friend and learns that two-thirds of the time passed equals four-fifths of the time remaining. The viewer is challenged to solve this problem, with a hint that the answer is a two-digit number.

What is the total duration of the lease discussed by the colonel?

• 99 years

• 100 years

• 50 years

• 75 years

How does the colonel's friend describe the expired portion of the lease?

• Half of the total lease

• Equal to the remaining time

• One-third of the total lease

• Two-thirds of the time passed equals four-fifths of the time to come

What mathematical relationship is used to describe the lease time?

• One-third of the time passed equals two-thirds of the time to come

• Half of the time passed equals half of the time to come

• Two-thirds of the time passed equals four-fifths of the time to come

• Three-fourths of the time passed equals one-fourth of the time to come

What is the hint given for solving the lease problem?

• It's a single-digit number

• It's a two-digit number

• It's a prime number

• It's a three-digit number

What is the colonel's approach to finding the answer to the lease problem?

• He asks another friend for help

• He uses a calculator

• He works it out himself

• He guesses the answer