Question

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

Answer 1

LET THE NO. BE X

THEN ATQ

(X-5/2)×8=3X

(2X-5/2)×8=3X

16X-40=6X

16X-6X=40

10X=40

SO X=40÷10

X=4

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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