Answer:
six rational number are
3/5 × 4= 12/20
3/4 ×5 =15/20
we have to find six rational number between 12/20 and 15/20, so we have to multiply numerator and denominator by 7
12×7= 84
20×7=140
15/20×7=105/140
85 ,86 , 87 ,88 89 90
140, 140, 140, 140, 140 ,140