Amina thinks of a number and subtract 5/2 from it . She multiple the result by 8. The result now obtained is 3 times the same number she thought of . What is the number.
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Answered by
11
Answer:
The number she thinks is 4
Step-by-step explanation:
Let n be the number
Amina thinks of a number and subtract 5/2 from it then result=n-(5/2)
she multiples the result by 8 so result=(n-(5/2))*8=(2n-5)*4=8n-20
The result is equal to 3 times the number
8n-20=3n
5n=20
n=4
So the number she thinks is 4
Answered by
7
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?
Let the number she thought be x
ATQ ,she subtract the 5/2 from the no.= x-5/2
She multiply the result by 8 =8(x-5/2)
Solution:-
- 3x = 8(x-5/2)
- 3x=8x -20
- 20=5x
- x=4
So, the number she thought is 4.
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