If 10 be added four times a certain number, the result is 5 less than five times the number.Find the number
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Let the number be "x",then as per question 10 added 4x times is 40x, which is equals to 5x-5.We get 40x=5x-5.
No according to question 10+4x=5-5x
Answers
Answered by
63
Let the number be x
Then,
10+4x=5-5x
10=5-5x-4x
10=5-9x
10-5=-9x
5=-9x
X=-5/9
Then,
10+4x=5-5x
10=5-5x-4x
10=5-9x
10-5=-9x
5=-9x
X=-5/9
the result is 5 less than 5 times the number. i. e. 5x-5 not 5-5z
Five less than means 5-
Five times the number means 5x
what is 5 less than 15?-10 or 10.
Let the number be x .Then,five less than five times the number =5-5x(five times the number=5x)
what I am saying is it should be 5x-5,
example 1 less than 3 is 2.Therefore 5 less than 5x will be =5x-5.
Answered by
20
Given - If 10 be added four times a certain number, the result is 5 less than five times the number.
Find - Number
Solution - The number is 15.
Let the number be x. As per the given information, 10 is added to four times a certain number.
Four times the number = 4x
Adding 10 we get = 10 + 4x
The result is 5 less than 5 times the number.
Five times the number = 5x
Subtracting five we get = 5x - 5
Equating the two equations -
10 + 4x = 5x - 5
10 + 5 = 5x - 4x
15 = x
Thus, the number is 15.
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