The correct option is C 85 m
Total cloth =325 m
Converting it to an improper fraction
325 m=5×3+25=175 m
Cloth used in making shirt =145 m
Converting it to an improper fraction
145 m=5×1+45=95 m
Cloth left = Total cloth - Cloth used in making shirt
Cloth left=175−95
Now, subtract the two fractions
As the denominators of the fractions are the same, so the numerators can be subtracted directly and the denominator remains the same.
=17−95
=85
Cloth left=85 m