It is: 5 to 7
2:1
the answer to the reduced ratio of 58 to 42 is 29 to 21.
42/30 = 1.4 = 140 %
42% of 30= 42% * 30= 0.42 * 30= 12.6
30% of 42= 30% * 42= 0.3 * 42= 12.6
42 / 63 = 66.666666666667%
30 + 42 = 72
42/100
28 : 42 = 2 : 3
42 - 30% = 42 x (1 - (30/100)) = 42 x 0.7 = 29.4
7.05 / 42 = 1 / 5.957 (rounded)
42