To express: the value of the two-digit number in terms of t and u .
Answer to Problem 5OE
The value of 2-digit number is
Explanation of Solution
Given information:
A two-digit number has tens digit t and units digit u .
The tens digit is one half the units digit.
Formula used:
Digit problems are based on our decimal system of numeration.
Step1. The problem asks for the original number.
Step2. Let t = the tens digit of the original number.
Let u = the units digit of the original number.
Step3. Use the facts of the problem to write two equations.
Step4. Solve the equations.
Calculation:
Consider ,
Let t = the tens digit of the original number.
Let u = the ones digit of the original number.
Therefore, the tens digit will be
Tens | Units | Value | |
Original number |
Hence, the value of 2-digit is
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