SOLUTION: Which of the following is the sum of all the multiples of 3 from 15 to 48?

Algebra ->  Sequences-and-series -> SOLUTION: Which of the following is the sum of all the multiples of 3 from 15 to 48?      Log On


   

Question 982000: Which of the following is the sum of all the multiples of 3 from 15 to
48?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
multiples of 3 from 15 to 48:
15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48

Add them all up to get 15+18+21+24+27+30+33+36+39+42+45+48 = 378