VOLUNTEER A group of volunteers worked to clean up a park over 2 days. The number of volunteers on the second day was 5 more than half of the
number of volunteers on the first day. There were 21 volunteers the second
day. Write and solve an equation to find the number of volunteers on the
first day.

Step-by-step explanation:

Volunteers on the first day: x

Volunteers on the second day:  5 + x/2 = 21

                                                           x/2 = 21 - 5

                                                           x/2 = 16

                                                           x = 32

Therefore the numbers of volunteers on the first day is 32

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.