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Phổ biến Word Problems >

The reciprocal of five less than a number is 4 times the reciprocal of twice the number. Find the number.

Lời Giải

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 4 t im es t h e rec i p roc a l o f tw i ce t h e n u mb er . F in d t h e n u mb er .

Lời Giải

The number : 10

Các bước giải pháp

Represent the number with

x

A.T.Q.:

\frac{1}{x - 5} = 4 \cdot \frac{1}{2 x}

Giải

x, \frac{1}{x - 5} = 4 \cdot \frac{1}{2 x} : x = 10

The number : 10

Ví dụ phổ biến

\$6000 grows to \$8329.13 in 8 years under continuous compounding. Find the interest rate. Round to the nearest tenth of a percent.The sum of 2 times a number and 6 is 8.72 is 40% of what number?twice the hiệu of a number and 6 is at most 22 Joey makes quarterly deposits of 750 into his IRA. If his IRA pays 2% compounded quarterly, how much is in the account after 20 years?