Answer:
The unknown number is 124.1.
Step-by-step explanation:
Let the unknown number be x.
We know that
1 hundreds = 100 ones
1 tens = 10 ones
1 tenth = 0.1 ones
It is given that the number has 1 hundreds, 4 ones, 2 tens, and 1 tenths.
x = 1 hundreds + 2 tens + 4 ones + 1 tenths.
Using the above conversions we get
[tex]x=1\times 100+2\times 10+4\times 1+1\times 0.1[/tex]
[tex]x=100+20+4+0.1[/tex]
[tex]x=124.1[/tex]
Therefore the unknown number is 124.1.