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If 2/5 of a number is added to 1/3 of the same number ,the sum is 22. What is the number?

User Jabclab
by
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2 Answers

5 votes
From the text of the task we can write the following equation:


(2x)/(5)+(x)/(3)=22\\ \\ Solving: multiplying \ all \ terms \ by \ 15:\\ \\ 6x+5x=330\\ \\ 11x=330\\ \\ x=(330)/(11)\\ \\ \boxed{x=30}
User Keisha
by
9.1k points
5 votes
2/5 x + 1/3 x = 22

First of all, I've been answering so many of these things lately that I'm
getting really tired of 'x'. Let's call the unknown number ' Q ' instead.

2/5 Q + 1/3 Q = 22

Multiply each side by 5 :

2Q + 5/3 Q = 110

Multiply each side by 3 :

6Q + 5Q = 330

Add the like terms on the left side:

11Q = 330

Divide each side by 11 :

Q = 30 .
User Wmarbut
by
7.9k points

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