Mathematics
Lisbeth388
37

The tens digit of a number is twice the ones digit. The sum of the digits in the number is 12. What is the number?

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(1) Answers
JadeZebrowski866

Let there be two variables: t and o where t is for ten digit and o is for one digit: So we have two equations: t = 2o                           (1) t+o = 12                       (2) Subtract (2) from (1) and we get o = 12-2o Now solve for o: 3o = 12 o = 4 Now plug in (1) or (2) and we have t = 8 Therefore our number is 10t + o = 84

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