Lara chooses a number less than 20 She divides it by 2 and then adds 6 She then divides this result by 3 Her answer is 4.5 What was the number she started with?

Solución

Solución

The number : 2.5

Pasos de solución

Represent the number with

x

A.T.Q.:

\frac{( \frac{20}{2} - x + 6 )}{3} = 4.5

Resolver para

x, \frac{( \frac{20}{2} - x + 6 )}{3} = 4.5 : x = 2.5

The number : 2.5

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