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3 years ago

7 less than one-fourth of a number equal to 17. What is the number?

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

4 0

(1/4)x-7=17

(1/4)x=24

x=96

work backwards

Inessa [10]3 years ago

3 0

Solve it by reversing what is done to the number. You don't need an equation to do that.

17 is 7 less than ...

so adding 7 to 17, making 24, will give you ... one-fourth of the number. If 24 is one-fouth of the number, multiplying 24 by 4 will give you the number. Doing that tells you the number is 96.

_____

You can do the same solution process using an equation.

(1/4)n - 7 = 17 . . . . . 7 less than 1/4 of a number is 17

(1/4)n = 24 . . . . . . . add 7

n = 4·24 = 96 . . . . multiply by 4

The number is 96.

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3 years ago

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charle [14.2K]

Answer:

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Step-by-step explanation:

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2 years ago

Jane is 5 times older than her sister. In 3 years, Jane’s sister will be 1/4 her age. Find the ages now

Korolek [52]

The present age of Jane is 45 years old and present age of her sister is 9 years old

Solution:

Let the present age of Jane be "x"

Let the present age of her sister be "y"

Jane is 5 times older than her sister

present age of Jane = 5(present age of her sister)

x = 5y ---------- eqn 1

In 3 years, Jane’s sister will be 1/4 her age

Age of sister after 3 years = 3 + y

Age of jane after 3 years = 3 + x

Age of sister after 3 years = 1/4(age of jane after 3 years)

$3 + y = \frac{1}{4}(3 + x)$

Substitute eqn 1 in above equation

$3 + y = \frac{1}{4}(3 + 5y)\\\\12 + 4y = 3 + 5y\\\\5y - 4y = 12 - 3\\\\y = 9$

Substitute y = 9 in eqn 1

x = 5(9)

x = 45

Thus present age of Jane is 45 years old and present age of her sister is 9 years old

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3 years ago

In 2004, Cindy had $4000 in a mutual fund account. In 2005, the

gtnhenbr [62]

6,250
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25/100 = x/5,000
x = 1,250

5,000 + 1,250 = 6,250

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3 years ago

Can 31/50 be simplified

kozerog [31]

No because when one number is odd and the other one is even it can't be simplified (unless they are multiples/factors of each other) ex: 7/14

7 0

3 years ago

Read 2 more answers