Respuesta :

Answer:

300

Step-by-step explanation:

Solve for x.

x+(2/5*x)=420

x=300

The number which becomes 420 after 40% increase. Hence, the original number is 300.

Step-by-step explanation:

Given information:

After increase of 40% the number becomes 420

Let , the original number is [tex]x[/tex]

So, according to the question:

We can write

[tex]x+(0.40\times x)=420\\x+0.40x=420\\1.40x=420\\x=420/1.4\\x=300[/tex]

Hence , the original number is 300.

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