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 number she thought of. What is the number.
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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 number she thought of. What is the number.
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Step-by-step explanation:
Let the number be X
Now,
[tex](x - \frac{5}{2})8 = 3x \\ = > 8x - 20 = 3x \\ = > 8x - 3x = 20 \\ = > 5x = 20 \\ = > x = \frac{20}{5} \\ = > x = 4[/tex]
Thus, the required number is 4
Om Namah Shivaya
Debasish Biswal
Verified answer
Answer:
4
Step-by-step explanation:
let the number be x
subtract 5/2
x-5/2=(2x-5)/2
multiplying result by 8
(2x-5)/2*8=8x-20
result is 3 times number she thought
8x-20=3x
8x-3x=20
5x=20
x=20/5
x=4