PROBLEM # 2
A confused bank teller transposed the dollars and cents when he cashed a check for me, giving me dollars instead of cents and cents instead of dollars.  After buying a newspaper for 50 cents, I noticed that I had left exactly three times as much as the original check.  What was the amount of the check?

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Problems from 06/07/12

PROBLEM #1
What is the surface area of a cone 6" in diameter and 5" slant height?

SOLUTION 1
 

PROBLEM #2
I on a train. I see a truck that is going on a parallel road in the opposite direction and passes my window in 6 sec. since the first sight. Later on, I see the train passing through a bridge of 180 ft in 12 secs. If the length of the truck is 168 ft, what is the speed of the truck in mph?

SOLUTION 2
13 ft/s.


Congratulations to Suhas Joglekar, who was the winner of the last set of puzzles.