Question

amina thinks of a number and subtracts 5/2 from it. she multiples the result by 8.the result now obtained is 3 times the same number she thought of. what is the number​

Answer 1

Step-by-step explanation:

let the number be x

(x-5/2)8=3x

x-5/2=3x/8

2x/2-5/2=3x/8

2x-5=3x/8*2

2x-5=3x/4

2x-3x/4=5

8x/4-3x/4=5

5x=5*4

x=20/5

x=4

4 is the right answer

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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)

1. 3x=8x -20

• 20=5x
• x=4

So, the number she thought is 4.

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