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 number she thought of. What is the number.

Answer 1

Step-by-step explanation:

Let the number be X

Now,

$(x - \frac{5}{2})8 = 3x \\ = > 8x - 20 = 3x \\ = > 8x - 3x = 20 \\ = > 5x = 20 \\ = > x = \frac{20}{5} \\ = > x = 4$

Thus, the required number is 4

Om Namah Shivaya

Debasish Biswal

Answer 2

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