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 plz give the answer
Answers
Answered by
425
Let the number she thought be x
(x/1 - 5/2) 8 = 3x
(2x-5/2)8/1=3x
16x-40/2=3x
16x-40=6x
16x-6x=40
10x=40
x=40/10
x=4
Answered by
10
Given:
5/2 subtracted from a number gave a result.
The result is multiplied by 8, and the result obtained is three times the number.
To find:
The value of the number thought by Amina.
Solution:
Let the number be X
Amina subtracts 5/2 from the number X and multiplies the final answer by eight. She gets the result three times the number X.
8 (X – 5/2) = 3 X
Opening the brackets and solving the equation,
8X – 8 × (5/2) = 3X
8X – 3X = 20
5X = 20
X = 4
The number Amina thought of is 4.
Similar questions