Answer:
Step-by-step explanation:
Number of blue marbles = 8
Total number of marbles = 16+8+7+1=32
B. 30
Boys to girls
2 : 3
Units of girls = 3
3 units = 18
1 unit = 18 ÷ 3 = 6
Total number of units = 2 + 3 = 5
5 units = 6 x 5 = 30
Answer:9 and 21
Step-by-step explanation:I used a calculator