Out of 15, 5 of men older than 30 did have facial hair, which means out of 15, 5 people is 1/3 or 33.3% of the 15 men.
9*2=18
18+9=27
There are 9 boys and twice as many girls so that means there is 18 girls and you have to find the total of boys and girls so you add 18 plus 9 to get a total of 27 students on the bus
9
If you multiply 6.8* 9, you will get 61.2
0.08 kilometers per minute.
Just do 4/50 and you’ll get the answer.