Answer:
One year ago, he had height of 150 cm.
Step-by-step explanation:
We have to model this situation.
The first step is having everything as the same unit. I am going to work in meters initially.
Each m is 100 cm. So 10cm = 10/100 = 0.1m.
I am also going to say that his height one year ago was x.
His height is now 1.6m, which is 10cm = 0.1m above his height last year, which was x. So
[tex]1.6 = 0.1 + x[/tex]
[tex]x = 1.6 - 0.1[/tex]
[tex]x = 1.5[/tex]
His height last year was 1.5m.
In centimeters, that is 1.5*100 = 150 cm.
