Question

The tens digit and the units digit of a two-digit number<br />are T and U respectively. The digit 4 is placed to the<br />right of U, forming a three-digit number. The new<br />number is equal to__.​

Answer 1

Answer:

100t+10+u.

Step-by-step explanation:

Let the number in one's place be u and the number in ten's place be 10t.

According the the question  

⇒10t+1+u

Hence now the 10t will become 100t as it will take hundred's digit place and 1 will become 10 as it will take ten's digit place.

Hence the value  of 3 digit number will be 100t+10+u.