233k views
4 votes
The sum of the two digits of a number is 9. If the tens digit is one-half the units digit, what is the number?

Let t = the tens digit, u = the units digit, and t+u = 9. Which of the following equations would complete the system?
t-u=1/2

t=1/2u

u=1/2t

User Ian Fiske
by
8.0k points

1 Answer

4 votes

Answer:

t=1/2u

Explanation:

Since t=tens digit and u=units digit, as given in the equation that means that t+u=9. Since the tens digit is one-half the units digit that means:
t=(1)/(2)u since it's one half the units digit.

User Ankit Singla
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.