Question

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 plz give the answer step by step.

Answer 1

Answer:

Amina originally took the number 4.

Step-by-step explanation:

Let the number which Amina took be " x ".

Now, after subtracting $\frac{5}{2}$  from x. She gets:-

x- $\frac{5}{2}$ =  $\frac{2x-5}{2}$

Now, she multiplied 8 to the new number after subtraction. Multiplying 8 to the resulting number she gets,

8($\frac{2x-5}{2}$) = 4(2x-5)

Now, given in the equation that the resulting number after multiplication is 3 times the original number.

According to the question,

4(2x-5) = 3x

=> 8x-20 = 3x

=> -20 = -5x

=> $\frac{-20}{-5}$ = x

=> x = 4

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Answer 2

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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?

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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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