Problem: One-half of Alvin's age two years from now plus one-third of his age three years ago is twenty years. How old is he now?

24.

Step-by-step explanation:

Let's make the answer a variable, alright?

20 = (x - 3)/3 + 3(x + 2)

Get rid of the fractions.

120 = 2(x-3) + 3(x + 2)

120 = 2x - 6 + 3x + 6

120 = 5x

x = 24.

24 is your answer.

i think 5 miles per hour

step-by-step explanation:

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58