Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?
Debasmita Pingua , 3 Years ago
Grade 8
1 Answers
Vedant Borkar
Last Activity: 3 Years ago
Let us take the number as thought by Amina to be 'x'.
First she subtracts 5/2 from it :
x-(5/2)
Then she multiplies it by 8:
8.{x-(5/2)}
Finally the result is three times the original number:
8.{x-(5/2)}=3x
8x - 20=3x
5x=20
-------> X=4.
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