28-02-2019
Mathematics

contestada

Does anyone get this!??

15 less than 3 times a number is the same as 5 more than half of the number. What is the number?

Respuesta :

MrBillDoesMath MrBillDoesMath

28-02-2019

Hello from MrBillDoesMath!

Answer:

8

Discussion:

Let the number be "n". Then the question states that

3n - 15 = (n/2) + 5 => multiply both sides by 2

6n - 30 = n + 10 => subtract n from both sides

5n - 30 = 10 => add 30 to both sides

5n = 30 + 10 = 40 => divide both sides by 5

n = 40/5 = 8

Thank you,

MrB

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