Answer:
30 tenth
Explanation:
Plotting 12 and 15 on a number line ;
The difference between the two values ; 12 and 15 is ;
15 - 12 = 3 units
Converting the difference in unit to tenth:
1 unit = 10 tenth
3 units = x tenth
x = 10 * 3
x = 30 tenth
Hence, approximate difference in tenth between 12 and 15 is 30 tenth