(a) 3/5 = ..../20
3 × 20 = 5 × ....
3 × 2 × 2 × 5 = 5 × ...
12 = ...
Hence, the required fraction is 12/20
(b) 3/5 = 9/...
3 × ... = 5 × 9
3 × ... = 5 × 3 × 3
.... = 15
Hence, the required fraction is 9/15
(c) 3/5 = .../30
3 × 30 = 5 × .....
3 × 2 × 3 × 5 = – 5 × ...
18 = ......
Hence, the required fraction is 18/30
(d) 3/5 = 27/.....
3 × ... = 5 × 27
3 × .... = 5 × 3 × 3 × 3
Hence, the required fraction is 27/45