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?​

Answer 1

Answer:

answer is 4

Step-by-step explanation:

first of all let the number be ' x '

given,

= x- 5÷2

= ( 2x-5)÷2

next step is

=[ (2x-5)÷2] ×8

=(2x-5)×4

=8x-20

now this 8x-20 is equal to the three times o

f the number, that means 8x-20=3x

8x-20=3x

8x-3x= 20

5x= 20

x = 20÷5

x= 4

so the assumed number is 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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