Answer:
There are 20 color strips in the blanket.
Explanation:
We are given the following in the question:
Length of blanket = 6 meter
A new color strip is added every 3 decimetres
We have to find the number of color strips in the blanket.
1 decimetre = 0.1 meter
Number of color strips =

Thus, there are 20 color strips in the blanket.