Answer:
[tex]\frac{1}{3}[/tex]
Step-by-step explanation:
We require the quantities to have the same dimensions.
Using the conversion
1 metre = 100 cm, then
2.1 m = 2.1 × 100 = 210 cm
The fraction can then be expressed as
[tex]\frac{70}{210}[/tex] ← divide numerator/ denominator by 70
= [tex]\frac{1}{3}[/tex] ← in simplest form
