Question

. To engrave a word on a metal plate, each of the first three letters costs 5 cents, and each letter after the first three costs 1 cent more than the preceding letter does. Determine the cost, in cents, of engraving the following word: O L Y M P I A D S

Answer 1

66

Explanation:

First three letters = 5*3 15

others = 6+7+8+9+10+11 = 51

So total is 66