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פּוֹפּוּלָרִי Word Problems >

The reciprocal of five less than a number is twice the reciprocal of the number. Find the number. Enter your answer as an integer or a reduced fraction. Do not use decimals.

פתרון

T h e rec i p roc a l o f f i v e l ess t han a n u mb er i s tw i ce t h e rec i p roc a l o f t h e n u mb er . F in d t h e n u mb er . E n t er yo u r an s w er a s an in t e g er or a re d u ce d f r a c t i o n . Do n o t u se d ec ima l s .

פתרון

The number : 10

צעדי פתרון

Represent the number with

x

A.T.Q.:

\frac{1}{x - 5} = 2 \cdot \frac{1}{x}

\frac{1}{x - 5} = 2 \cdot \frac{1}{x}, x

פתור בשביל:

x = 10

The number : 10

דוגמאות פופולריות

How much do we need to subtract from 220 to get 121?28 is 35% of what number?the product of a number and 6 is greater than 33 Sarah wins 3,000 and decides to invest it in an account that pays 9% interest compounded quarterly. how much will she have if she keeps it there for 5 years?Madeline invested 920 in an account paying an interest rate of 3.6% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to the nearest cent, would be in the account after 11 years?