(a) Denominator 20
We need to multiply the fraction \(\frac{3 }{ 5}\) by a number that gives \(20\) the denominator.
\(\frac{3 }{ 5} × \frac{4 }{ 4} = \frac{12 }{ 20. }\)
(b) Numerator 9
We need to multiply the fraction \(\frac{3 }{ 5}\) by a number that gives \(9\) as result in the numerator.
\(\frac{3}{ 5} × \frac{3 }{ 3} = \frac{9 }{ 15}\)
(c) Denominator 30
We need to multiply fraction \(\frac{3 }{ 5}\) with a number that gives \(30\) as result in the denominator.
\(\frac{3 }{ 5} × \frac{6 }{ 6} = \frac{18 }{30.}\)
(d) Numerator 27
We need to multiply the fraction \(\frac{3 }{ 5}\) by a number that gives \(27\) as result in the numerator.
\(\frac{3}{ 5} × \frac{9 }{ 9} = \frac{27 } {45}\).
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow