Question

A student wanted to use toilet paper to show the distance of one Astronomical Unit, or the distance from the Sun to Earth. They decided to use a scale factor of 1 square of toilet paper = 100,000 km. How many rolls of toilet paper will the student need, if each roll of toilet paper has 500 squares?

A.5 C.3
B.8 D.1

Answer 1

A is the correct one

Answer 2

C.3

Sun-earth =150’000’000 km
1 roll of toilet paper equals 500x100’000=50’000’000 km
150mil/50mil=3 rolls of toilet paper!