- #1
Natasha1
- 493
- 9
Homework Statement
Emily's brother, Jack, is now 105cm tall, having grown by one sixth of his height a year ago. How tall was Jack one year ago?
Homework Equations
Now my teacher told me to do this:
x = 105 - (105/7)
x = 105 - 15
x = 90 cm
The Attempt at a Solution
So 90cm is the answer. But can someone explain to me very simply why we divided by 7 the 105 as the question says that Jack grew by one sixth and not by one seventh? Many thanks.