SOLUTION: A student was hired by a city's maintenance department to paint house numbers on the curbs in a particular neighborhood. Each digit had to be painted separately, and the student wa
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Question 1134768: A student was hired by a city's maintenance department to paint house numbers on the curbs in a particular neighborhood. Each digit had to be painted separately, and the student was paid 50 cents per digit. He painted house numbers from 1-225. How much did he earn?
My email address is dmranos@gmail.com Answer by ikleyn(52786) (Show Source):
9 one-digit numbers from 1 to 9: 9 digits, in all.
90 two-digit numbers from 10 to 99: 2*90 = 180 digits, in all.
225-99 = 126 three-digit numbers from 100 to 225: 3*126 = 378 digits, in all.
The total number of the digits is 9 + 180 + 378 = 567.
The student earns 0.5*567 = 283.50 dollars. ANSWER
Solved.
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