Answer:
I think there are about 16-20 ducks with red marks on them.
Around 10 ducks have a red mark
4:14, 6:21, 8:28
Step-by-step explanation:
2x2=4 2x7=14 = 4:14
2x3=6 3x7=21 = 6:21
2x4=8 4x7=28 =8:28
hope you find it useful and helpful