Question

The product of two rational number is 5/18. If one of them is-3/20, find the other

Answer 1

Let the other number = a

One number = -3/20

Product = 5/18

-3/20 x a = 5/18

a = 5/18 ~ -3/20

a = 5/18 x -20/3

a = -50/27

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Answer 2

GIVEN :  One Rational Number = $\frac{-3}{20}$    ; Product of two rational number = $\frac{5}{18}$

TO FIND : Other rational number

SOLUTION :

Let another Rational number be x.

Product of two rational number = $\frac{5}{18}$

$\frac{-3}{20 }$ × x = $\frac{5}{18}$    

$\frac{-3x}{20}$  =  $\frac{5}{18}$

-3x = $\frac{5. 20}{18}$

- 3x = $\frac{100}{18}$

-3 x = 5.55

x = $\frac{5.55}{-3}$

x =  -1.85

Other Rational Number is  -1.85 .